Editor's Choice - Our Favorite 20 Gallon Aquariums

1. Ameriwood Home Flipper 10/20 Gallon Aquarium Stand, Black Oak, 15.7 x 25 x 28 inches

User Ratings: 70 6

Flipper 5695325COM First Impressions

"Seems a little wasteful."

My sponge, duster worms, snails and crabs, porcelain and emerald are doing well. It's simple enough to put together. An Eco Bio block is a good idea to. Looks very similar to more expensive tanks for much less. FOLLOW THE INSTRUCTIONS THAT COME WITH IT. I think I am going to get the 28 gallon also for my office area in the loft. It comes with everything you'd want besides a heater and protein skimmer.

  • Ameriwood Home Flipper 10/20 Gallon Aquarium Stand, Black Oak, 15.7 x 25 x 28 inches
  • age range description: All Life Stages
  • special features: Made In AmericaIncludes Stand
  • Manufacture: AMJG7
  • Product Dimensions: 15.69 x 25 x 28 inches; 42 Pounds
  • Editor's Impressions Of The Flipper 5695325COM
  • Quality
  • Value For Money
  • Affordability

Flipper 5695325COM Final Thoughts

"They work well for algae."

My tanks cycled quickly, and I've had no problems with ammonia. Not a single smear or excess silicon in any place, no bubbles, ymmv. I didn't even add the skimmer, and it has be perfect. I plan on plenty invertebrates and softies only so I may never need to upgrade. Use seachem prime and stability with every water change and as needed by directions. To me I think it is worth it to have such a good tank. Beautiful tank, had a local glass co.

Overall Score
4.4


(525 Points)

Peoples Choice - Other Highly Rated 20 Gallon Aquariums

2. DreamDealsSG 100x Tourmaline Balls for Freshwater Aquarium Tank. Mineral Supplement Substrate. Live ...

User Ratings: 70 3

DREAMDEALS So Good First Impressions

"I've had it a day so far."

I didn't notice the dust on the glass until I reviewed the zoomed in pictures. You can see the pic and decide what's right for your needs. Not a single smear or excess silicon in any place, no bubbles, ymmv. It comes with everything you'd want besides a heater and protein skimmer. I set this up just like I would have a big salt tank. Mostly I just love looking at this tank. The instructions are maybe two pages.

  • DreamDealsSG 100x Tourmaline Balls for Freshwater Aquarium Tank. Mineral Supplement Substrate. Live Shrimp Food, Betta Fish Food, and Crayfish Food. Water Conditioner for Freshwater Shrimp etc.
  • Vibrant health: Just like vitamins, minerals and pH balanced water for humans, your Shrimp, Bettas, Crayfish and Snails also need those things for bright colors, healthy breeding, molting and play! So, when you add DDSG Mineral Balls to your tank you’re giving your fishy friends, the best of health!
  • How do they work? Out in the wild, cherry shrimp, ghost shrimp, amano shrimp, freshwater fish and all other water-lovin’ life are constantly exposed to pH balanced, mineral water from earth’s rocks – with natural bacteria. This is how they molt, breed and maintain healthy vibrancy. Our organic tourmaline is a natural rock with over 30 minerals to keep your tank balanced just like those wild waters.
  • Size and quantity: This is the most cost effective pack you’ve found on your search. Chances are you have at least one 10 gallon fish tank (but commonly 20 gallon tank, or 50 gallon). And because you’ll add one ¼ inch ball per gallon, you’ll need enough for every tank! So this 100 pack makes perfect sense.
  • Copper-free! Of course you may have some nerite snails and other friendly things in your shrimp tank, so you’ll love knowing each tourmaline ball is copper-free! And because they’re natural and pH balanced they keep your aquarium crystal clear, free from impurities, ammonia and hold a stable pH balance. And because they’re so mineral rich, your aquatic plants will get the nutrients they need, too.
  • Calcium-enhanced and more: DDSG Mineral Supplement beads contain 30 minerals including calcium, iron, magnesium, sodium, boron, manganese and more. It’s like a daily dose of Spirulina for our splashy pals! Suited for freshwater aquarium snails, betta tank, freshwater shrimp, live crayfish and goldfish. So, feed them well, keep them clean, and supplement with DDSG Minerals so they can dazzle you for years!
  • Manufacture: Dreamdeals
  • Item Weight: 3.98 ounces
  • Editor's Impressions Of The DREAMDEALS So Good
  • Quality
  • Value For Money
  • Affordability

DREAMDEALS So Good Final Thoughts

"This was perfect!"

But even so, the tank is beautiful! The Evo has the same capacity but seems like a much bigger tank than the Portrait. The stock pump is high quality but opted to use it in the tank to circulate water. I have this aquarium for now a couple of weeks. Also there is more floor space to spread out the live rock and create a cool scape. I didn't notice the dust on the glass until I reviewed the zoomed in pictures. Seriously, it doesn't even cover the filter, and it looks pretty bad.

Overall Score
4.5


(405 Points)

3. Flipper 10/20 Gallon Aquarium Stand, Rustic Oak

User Ratings: 72 4

Flipper 5695333COM First Impressions

"Pretty Happy."

Mine's sitting on the carpet, and it's completely silent that way. Beautiful tank, had a local glass co. My biggest gripes about it are the lack of room in the back. Mostly I just love looking at this tank. I immediately noticed that the glass moves slightly in the corners when pressed on. You can't even see the pushed in spots. A little piece of foam in the bubble tube keeps gravel out while putting it in.

  • Flipper 10/20 Gallon Aquarium Stand, Rustic Oak
  • Get an aquarium stand that fits your needs with the Flipper 10/20 Gallon Aquarium Stand
  • Made of laminated MDF and particleboard, the medium brown woodgrain finish gives the Stand a classic look
  • Unique patent design can support a 10 gallon stand on one end or a 20 gallon stand on the opposite end. Tank is not included
  • Open and concealed storage can hold all of your nets, cleaning equipment, and food
  • The Stand ships flat to your door and 2 adults are recommended to assemble. Stand can support 10 gallon tanks up to 120 lbs. or 20 gallon tanks up to 240 lbs. Assembled dimensions: 28.03”H x 25”W x 15.67”D
  • Manufacture: Dorel - Multiple - Parent - DROPSHIP
  • Product Dimensions: 15.67 x 25 x 28.03 inches; 42 Pounds
  • Editor's Impressions Of The Flipper 5695333COM
  • Quality
  • Value For Money
  • Affordability

Flipper 5695333COM Final Thoughts

"Easy to clean."

I think it will provide a good home and upgrade for my current aquarium inhabitants. An Eco Bio block is a good idea to. It comes with everything you'd want besides a heater and protein skimmer. After the foam is in I put the gravel in. Given the price I paid, I am hoping it will continue to hold water! I will usually slow it down more at night so he can sleep undisturbed. Just like the aquariums I saw in the aquascaping videos I watched on YouTube.

Overall Score
4.5


(268 Points)

4. Aqueon Aquarium 20 Gallon Long

User Ratings: 72 10

OCEANIC SYSTEMS INC. 100110021 First Impressions

"Absolutely luv it."

I could not put water in it as shipped because the return pump was compromised. I added a small circulation pump to get better water movement. Overall great package and would definitely buy it again and recommend it. Mostly I just love looking at this tank. Not a fan of the filtration sponge. That will make it easier to maintain the water temp and find a heater. The BioOrb does an amazing job keeping the tank clean and fresh.

  • Aqueon Aquarium 20 Gallon Long
  • High quality glass construction with dimensions 30.25" x 12.5" x 12.75"
  • For freshwater and marine applications
  • Clean silicone edges (select sizes available in clear or black)
  • Always include a drip loop when plugging aquarium appliances into the electrical outlet
  • Place aquarium on stand able to safely bear the weight of a filled aquarium
  • Manufacture: Aqueon
  • Product Dimensions: 30.25 x 12.5 x 12.75 inches; 22 Pounds
  • Editor's Impressions Of The OCEANIC SYSTEMS INC. 100110021
  • Quality
  • Value For Money
  • Affordability

OCEANIC SYSTEMS INC. 100110021 Final Thoughts

"Attached some photos."

Just like the aquariums I saw in the aquascaping videos I watched on YouTube. I set this up just like I would have a big salt tank. It sits inside of styrofoam and is double boxed and wrapped once with bubble wrap. I do enjoy how modern it looks with no rims. I think I am going to get the 28 gallon also for my office area in the loft. Use seachem prime and stability with every water change and as needed by directions. My tanks cycled quickly, and I've had no problems with ammonia.

Overall Score
4.3


(172 Points)

Honorable Mentions - More Top Selling 20 Gallon Aquariums

5. Aquarium Masters Aquarium Lid - Glass Canopy Two Piece Set for 80 Gallon, 120 Gallon, 150 Gallon Aqu...

User Ratings: 36 16

Aquarium Masters AM13521 First Impressions

"My betta really likes it."

It started to malfunction immediately upon being plugged in. I didn't even add the skimmer, and it has be perfect. I could not put water in it as shipped because the return pump was compromised. All in all it is packaged very well. I purchased one of the biOtube plant sets also. Final gripe and its not a big deal is that there isn't a lid over the feeding hole. I could not put water in it as shipped because the return pump was compromised.

  • Aquarium Masters Aquarium Lid - Glass Canopy Two Piece Set for 80 Gallon, 120 Gallon, 150 Gallon Aquariums 48" Long x 24" Wide (48x24) with A Center Brace Aquariums, Deep Blue & More, AM34824
  • Please measure your tank opening to the closest 1/16 of an inch before purchasing. Each aquarium brand has a different size frame and opening for canopies
  • New Aquarium Glass Canopy for 80 gallon, 120 gallon, & 150 gallon aquariums 48" long x 24" wide by Aquarium Masters Aquariums, Deep Blue & more, AM34824.
  • Contains Two non-tempered 22-13/16 inch by 22-7/16 inch glass canopies, making it safer for your fish. Comes with 2 inch wide plastic backstrip that can be cut to accommodate airline tubing, heaters, and other gear. Each canopy comes with a handle and each canopy folds open
  • Fits the following framed standard and reef ready aquariums: 80, 120, 150 Gallon Aquarium Masters Aquariums, Deep Blue Aquariums and Seapora Aquariums
  • Before purchasing, please see our video on "How to determine the canopy you need", located in the photos section of this listing!! Aquarium Masters glass canopies include diamond polished edges, handle, hinge, and backstrip on most standard models. Glass canopies available for 10 gallon to 360 gallon aquariums.
  • Many fish can and will jump out of your aquarium. Nearly all fish can do this for numerous reasons.
  • On a similar note, a cover will help foreign objects from falling into the aquarium. If there are young children or pets in your household, this could be a very important consideration. Same thing if you keep any supplies above the tank.
  • A cover reduces evaporation, which means you will not lose water as quickly. This can be pretty noticeable in warm water systems. Evaporation can also leave mineral deposits behind.
  • Manufacture: Aquarium Masters
  • Product Dimensions: 24 x 24 x 2 inches; 10 Pounds
  • Editor's Impressions Of The Aquarium Masters AM13521
  • Quality
  • Value For Money
  • Affordability

Aquarium Masters AM13521 Final Thoughts

"Great tank."

I set this up just like I would have a big salt tank. Mine loves lounging and swimming through ours. I grabbed the Sungrow Aquarium Gravel Cleaner Kit. But even so, the tank is beautiful! This is my new favorite brand of aquariums. I wanted to wait a little before reviewing so I could give a good and honest review. I have been an active fish keeper for years.

Overall Score
3.6


(13 Points)

6. Aquarium Masters Single Piece Glass Canopy for 20L, 29S, 37H Gallon Aquariums, AM33012, for 30" Long...

User Ratings: 65 35

Aquarium Masters AM33012 First Impressions

"Great tank."

I do 1 drop per two gallons 3x a week for first few months. Overall great package and would definitely buy it again and recommend it. I really like the ceramic media as it provides a great home for the'good' bacteria. I will definitely be purchasing a Landen tank for all future purchases. I immediately noticed that the glass moves slightly in the corners when pressed on. I bought two of these tanks and the quality of them in just amazing. I've built a fresh nano planted tank using this.

  • Aquarium Masters Single Piece Glass Canopy for 20L, 29S, 37H Gallon Aquariums, AM33012, for 30" Long x 12" Wide Aquariums with No Center Brace
  • New Glass Canopy for 20 gallon Long, 29 gallon show, & 37 gallon high 30" long x 12" wide by Aquarium Masters Aquariums, Deep Blue & more, AM33012
  • Contains One 29 inch by 9-9/16 inch folding glass canopy, comes with 2 inch wide plastic backstrip that can be cut to accommodate airline tubing, heaters, and other gear. The canopy comes with a handle and the canopy folds open
  • Fits the following framed standard and reef ready aquariums: 20L, 29S, 37H by Aquarium Masters Aquariums, Deep Blue & more with no center brace
  • Aquarium Masters glass canopies include diamond polished edges, handle, hinge, and backstrip on most standard models
  • Before purchasing, please see our video on "How to determine the canopy you need", located in the photos section of this listing!! Glass canopies available for 10 gallon to 360 gallon aquariums
  • Many fish can and will jump out of your aquarium. Nearly all fish can do this for numerous reasons.
  • On a similar note, a cover will help foreign objects from falling into the aquarium. If there are young children or pets in your household, this could be a very important consideration. Same thing if you keep any supplies above the tank.
  • A cover reduces evaporation, which means you will not lose water as quickly. This can be pretty noticeable in warm water systems. Evaporation can also leave mineral deposits behind.
  • Manufacture: Aquarium Masters
  • Product Dimensions: 29.25 x 9.56 x 0.38 inches; 10 Pounds
  • Editor's Impressions Of The Aquarium Masters AM33012
  • Quality
  • Value For Money
  • Affordability

Aquarium Masters AM33012 Final Thoughts

"Recommended."

I put it opposite the return pump and it creates awesome flow. That will make it easier to maintain the water temp and find a heater. Wanted the ADA look but on a budget and this fits the bill. I immediately noticed that the glass moves slightly in the corners when pressed on. It really makes it easy to keep the outside surface clean and shiny! I picked this, because it was simple and had everything I needed. I plan on plenty invertebrates and softies only so I may never need to upgrade.

Overall Score
3.6


(4 Points)

7. Aquarium Masters Single Piece Glass Canopy for 20L, 29S, 37H Gallon Aquariums, AM33012, for 30" Long...

User Ratings: 65 35

Aquarium Masters AM33012 First Impressions

"It's gorgeous."

I have been an active fish keeper for years. They are affordable and beautiful and well made. 1 gallon puts my other 7 tanks to shame. This arrived a little over 24 hours ago and I will update as a resolution comes. My other gripe would be with the lid. I find them very easy to keep clean. It started to malfunction immediately upon being plugged in.

  • Aquarium Masters Single Piece Glass Canopy for 20L, 29S, 37H Gallon Aquariums, AM33012, for 30" Long x 12" Wide Aquariums with No Center Brace
  • New Glass Canopy for 20 gallon Long, 29 gallon show, & 37 gallon high 30" long x 12" wide by Aquarium Masters Aquariums, Deep Blue & more, AM33012
  • Contains One 29 inch by 9-9/16 inch folding glass canopy, comes with 2 inch wide plastic backstrip that can be cut to accommodate airline tubing, heaters, and other gear. The canopy comes with a handle and the canopy folds open
  • Fits the following framed standard and reef ready aquariums: 20L, 29S, 37H by Aquarium Masters Aquariums, Deep Blue & more with no center brace
  • Aquarium Masters glass canopies include diamond polished edges, handle, hinge, and backstrip on most standard models
  • Before purchasing, please see our video on "How to determine the canopy you need", located in the photos section of this listing!! Glass canopies available for 10 gallon to 360 gallon aquariums
  • Many fish can and will jump out of your aquarium. Nearly all fish can do this for numerous reasons.
  • On a similar note, a cover will help foreign objects from falling into the aquarium. If there are young children or pets in your household, this could be a very important consideration. Same thing if you keep any supplies above the tank.
  • A cover reduces evaporation, which means you will not lose water as quickly. This can be pretty noticeable in warm water systems. Evaporation can also leave mineral deposits behind.
  • Manufacture: Aquarium Masters
  • Product Dimensions: 29.25 x 9.56 x 0.38 inches; 10 Pounds
  • Editor's Impressions Of The Aquarium Masters AM33012
  • Quality
  • Value For Money
  • Affordability

Aquarium Masters AM33012 Final Thoughts

"My betta really likes it."

The longest delay was my downloading invoice. I put it opposite the return pump and it creates awesome flow. The Evo has the same capacity but seems like a much bigger tank than the Portrait. This is my new favorite brand of aquariums. An Eco Bio block is a good idea to. I bought two of these tanks and the quality of them in just amazing. Also very important for filtration.

Overall Score
3.6


(4 Points)

8. SC Aquariums 120 Gallon Starfire Glass Aquarium 48x24x24 12mm Eurobraced with Built-in Overflow Box

SC Aquariums First Impressions

"This tank is super small."

It really makes it easy to keep the outside surface clean and shiny! Highly recommend this for beginners. I used an Aquatop Np302 and the tubing from the Portrait as my return pump. I could not put water in it as shipped because the return pump was compromised. I didn't want to cover the filter because it would make cleaning harder. I recommend buying the biOtube polish to! I have been an active fish keeper for years.

  • SC Aquariums 120 Gallon Starfire Glass Aquarium 48x24x24 12mm Eurobraced with Built-in Overflow Box
  • Size: 120 Gallon Aquariums 48x24x24" 12mm Eurobraced
  • Starfire (Low Iron) glass on front 3 Sides
  • Black Background, Black Silicone
  • built-in Overflow Box, max flow 1500 GPH (3 holes drilled inside all fit SCH40 1" bulkhead)
  • SCH40 Plumbing Kit included
  • Manufacture: SC Aquariums
  • Editor's Impressions Of The SC Aquariums
  • Quality
  • Value For Money
  • Affordability

SC Aquariums Final Thoughts

"I have used the h."

Not a fan of the filtration sponge. You must buy a special one they produce for marine tanks. Also have live sand on the bottom, about 1plus inches. The instructions are maybe two pages. Mine's sitting on the carpet, and it's completely silent that way. 5 watt works well and keeps it between 78-80 degrees if the room air is around 70–71. I've wanted this tank for a LONG time, and I love it.

Overall Score
5.0


(3 Points)

9. ISTA Aquarium Energy Saving Arrayed Cooling Fan ColdWind for Fish Tank

User Ratings: 67 33

Aquarium Equip IC818 ISTA節能冷卻排扇 三 First Impressions

"I love this tank."

I used an Aquatop Np302 and the tubing from the Portrait as my return pump. Just do your homework and don't overload this tank. This arrived a little over 24 hours ago and I will update as a resolution comes. At least 30%, more if testing indicates a problem or if water is looking bad. Double the amount of ceramic media they give you. The BioOrb does an amazing job keeping the tank clean and fresh. I also add seachem pristine per direction once a week for first few months.

  • ISTA Aquarium Energy Saving Arrayed Cooling Fan ColdWind for Fish Tank
  • AC100~240V 50/60 Hz universal voltage
  • for 60~90cm fish tank #IC-818
  • Manufacture: IC818 ISTA節能冷卻排扇 三
  • Product Dimensions: 15 x 5.6 x 2.5 inches; 1.35 Pounds
  • Editor's Impressions Of The Aquarium Equip IC818 ISTA節能冷卻排扇 三
  • Quality
  • Value For Money
  • Affordability

Aquarium Equip IC818 ISTA節能冷卻排扇 三 Final Thoughts

"They work well for algae."

That will make it easier to maintain the water temp and find a heater. My other gripe would be with the lid. Double the amount of ceramic media they give you. 1 gallon puts my other 7 tanks to shame. The multi colored LED lights cost more than the tank itself too. I'm really liking the Landen line of aquariums. The most serious issue thus far is the light bar.

Overall Score
3.7


(4 Points)

10. Aquarium Tank, Glass, 10 Gal

User Ratings: 43 13

Carolina Biological Supply Company First Impressions

"They sent a replacement."

Overall I'm pleased with the purchase. Not a single smear or excess silicon in any place, no bubbles, ymmv. This arrived a little over 24 hours ago and I will update as a resolution comes. And my Midas Blenny and Cleaner shrimp are doing so well in it. But even so, the tank is beautiful! Mostly I just love looking at this tank. Beautiful tank, had a local glass co.

  • Aquarium Tank, Glass, 10 Gal
  • All-glass 10-gallon aquarium has sides and bottom of tripple-strength, clear glass welded together with silicone rubber.
  • Strong, leakproof aquarium will last for years
  • Nonreactive with seawater
  • Top frame designed for a recessed cover
  • Dimensions: 20" x 10" x 12" H.
  • Manufacture: Carolina Biological Supply Company
  • Editor's Impressions Of The Carolina Biological Supply Company
  • Quality
  • Value For Money
  • Affordability

Carolina Biological Supply Company Final Thoughts

"First go to Greatwaveeng."

I will definitely be purchasing a Landen tank for all future purchases. Just like the aquariums I saw in the aquascaping videos I watched on YouTube. 1 gallon puts my other 7 tanks to shame. It's simple enough to put together. I recommend buying the biOtube polish to! Overall I'm pleased with the purchase. You can see the pic and decide what's right for your needs.

Overall Score
3.5


(17 Points)

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