Editor's Choice - Our Favorite OIIKI Aquarium Décor Tank Dividers

1. OIIKI 4 PCS Egg Crate for Aquarium, Fish Tank Bottom Isolation, Grid Tank Divider Tray for Mixed Bre...

User Ratings: 61 11

OIIKI First Impressions

"Otherwise very good."

Will certainly be buying more of these! My only small issue with it is the way it attaches to the tank. My dog can use her indoor potty and keep clean and dry above the pad. I did not receive suction cups but I had my own to it did what I was looking for. Very good divider for my 20 gal long freshwater aquarium. If you have the divider in the gravel it will not meet the top of the tank. You do have to assemble it yourself but that isn't too hard.

  • OIIKI 4 PCS Egg Crate for Aquarium, Fish Tank Bottom Isolation, Grid Tank Divider Tray for Mixed Breeding
  • Material: The Grid Tank Divider is made of food-grade plastic material, environmental protection, won't affect water quality.
  • Size: 11.8" x 5.9" x 0.3"/30cm x 15cm x 0.8cm.
  • Features: The tank dividers can ben stitched, splicing according to needs.
  • Application:You can easily divide the tank into several compartments with the divider holders, separating different fish, for breeding and preventing the fish to fight as well.
  • Package included: 4 PCS Grid Tank Divider in total.
  • Manufacture: OIIKI
  • Editor's Impressions Of The OIIKI
  • Quality
  • Value For Money
  • Affordability

OIIKI Final Thoughts

"5 gallon fabric pots."

I will be buying more of this I recommend them 100%. Very tight fit with hardly any gap. Purchased this to temporarily divide a 20-long tank for axolotls. Very pleased with this tank divider. Get this if your dividing your tank for betta fish. This WILL fit an Aqueon tall 10 gallon, but NOT a Top Fin tall 10 gallon. I have it in a divided ten gallon with two bettas.

Overall Score
4.1


(19 Points)

2. Gelible Aquarium Fish Tank Acrylic Divider

User Ratings: 50 11

Gelible First Impressions

"Love this seat cover."

The holes are smaller than some other similar dividers, which is why I chose these. It was a bit too wide for my tank, so I cut it a bit and it's perfect. Overall this has done the job I've needed to. It is a thick sturdy plastic, and the suction power is strong. The female is on the larger side with her babies. It's good for what I needed it for. I have it in a divided ten gallon with two bettas.

  • Gelible Aquarium Fish Tank Acrylic Divider
  • ⭐Dimensions: 11.8'* 11.8'* 0.12 inches (30cm * 30cm * 3mm) suitable for most American fish tanks, packaging includes suction cups;
  • ⭐Good material: made of high-quality acrylic material, providing a good space for the fish;
  • ⭐Good hole arrangement: we provide appropriate hole structure and size (hole diameter: 5mm), the bottom defecation hole is 3mm;
  • ⭐Good environment: we use transparent design and advanced environmental protection materials to provide sufficient protection for your fish safety;
  • ⭐Note: We have covered the product with a white protective film, please remove it before use, and please pay attention to whether the size of your fish tank matches the size of the partition;
  • Manufacture: Gelible
  • Editor's Impressions Of The Gelible
  • Quality
  • Value For Money
  • Affordability

Gelible Final Thoughts

"But it keeps adults in."

I got this so I could put two male bettas in a tank. It comes in clear so I had to rough up both sides to make it opaque. Im using them to hold airline tubing. So I divided it allowing me to have 2 tanks in one large tank. It keeps the boys from being able to see each other. However, keep in mind this tank divider does not fit just ANY 10 gallon! This product is one that I would be really sad to see disappear.

Overall Score
3.8


(37 Points)

3. WDFS Isolate Board 2pcs Home Accessories Aquarium Bottom Grid Divide Garden Durable Professional Fis...

WDFS First Impressions

"I love this!"

So I dont need the suction cups even though I'm glad I have them. Very few problems just a couple things to keep in mind when buying. Second- Do not recommend for bettas or small fish! Take it from us— follow the instructions about what type to use! Actually adds additional filtration I think. This was clear, easy to install, and well made. It assembled quickly and painlessly.

  • WDFS Isolate Board 2pcs Home Accessories Aquarium Bottom Grid Divide Garden Durable Professional Fish(Transparent)
  • Used in virtually all professional filters these can easily be cut to size or cable tied together for larger filters.
  • Use these divider holders for SEparations of different fish,for breeding and to prevent your fish to fight as well.
  • Suitable for: Isolate fish, build platform, bottom filter
  • Made of material,safe and durable, non-toxic,no harm to fish You can easily divide your tank into several compartments with these divider holders
  • ​ Size(L x W ): Approx. 30cm x 15cm /11.81inch x5.91inch;Package Included: 2PCS x Isolate Board
  • Manufacture: WDFS
  • Product Dimensions: 12.6 x 3.94 x 3.15 inches; 0.35 Ounces
  • Editor's Impressions Of The WDFS
  • Quality
  • Value For Money
  • Affordability

WDFS Final Thoughts

"Excellent product!"

The gravel along with the quick trim left no gaps for me. This is a great option for keeping two bettas in the same tank! I used this to separate my two Betta fish in a 10 gallon tank. They can still see each other and try to fight through the barrier but its a no go. It is a thick sturdy plastic, and the suction power is strong. It dose have good flow between the tanks. No it doesnt come with the suction cups.

Overall Score
5.0


(1 Points)

4. uxcell Pairs Aquarium Tank Glass Cover Clip Support Holder 4-12mm

uxcell US-SA-AJD-22515 First Impressions

"Worked like a charm."

First- When dividing a 10 gallon tank the flow is not the same. Take it from us— follow the instructions about what type to use! The fry didn't understand so they swam through the sides. You will have to cut them to fit any other size aquarium. Let's water flow freely through our entire tank. It was slightly long so I had to trim off the bottom edge to make it fit. I had ordered 3 others before this one.

  • uxcell Pairs Aquarium Tank Glass Cover Clip Support Holder 4-12mm
  • Prodcut Name : Fish Tank Glass Clip;Material : Plastic
  • Thickness : Fit for 4-12mm;Total Size : 14 x 4 x 3.5cm / 5.5" x 1.6" x 1.4"(L*D)
  • Color : Clear
  • Net Weight : 88g
  • Package Content : 2 x Fish Tank Glass Clip
  • Manufacture: uxcell
  • Editor's Impressions Of The uxcell US-SA-AJD-22515
  • Quality
  • Value For Money
  • Affordability

uxcell US-SA-AJD-22515 Final Thoughts

"Definitely not easy."

And since it has been working ok, I decided to change the review to 4 star. Two were forced to spend most of their time in hiding. I had an oddly aggressive Molly and this worked great for the time I needed to use. This is a great option for keeping two bettas in the same tank! The holes are smaller than some other similar dividers, which is why I chose these. I know Betta fish are aggressive, so they must be separated. Barrier is like a plastic mesh screen that allows water to flow through.

Overall Score
5.0


(3 Points)

5. AROYEL 2Pcs Grid Isolate Board Divider Fish Tank Bottom Black Filter Tray Aquarium Crate

User Ratings: 50 50

AROYEL First Impressions

"Go together easy."

You can also try any other small fish. It keeps the boys from being able to see each other. Holes are drilled evenly and it will divide fish 1. It is easy to install but, careful not to lose anything. Very pleased with this tank divider. So I dont need the suction cups even though I'm glad I have them. So I'm writing this to tell you you step on them.

  • AROYEL 2Pcs Grid Isolate Board Divider Fish Tank Bottom Black Filter Tray Aquarium Crate
  • Material: Aquarium Fish Tank Filter Bottom Isolation make by safe and environmental protection plastic,won't produce safe effect to aquatic animals box water quality.
  • Size: 30*15*0.8cm/ 30*30*0.8cm ( Can be choose).
  • Use these divider holders for separations of different fish,for breeding and to prevent your fish to fight as well.
  • Used as a plate for bottom filtering, favorable water cycle. Could be cut to any sizes that fits your fish tank.
  • Handy clips to divide a bigger fish tank into several compartment for breeding or separation.Suitable for:Isolate fish,build platform,bottom filter.
  • Manufacture: AROYEL
  • Editor's Impressions Of The AROYEL
  • Quality
  • Value For Money
  • Affordability

AROYEL Final Thoughts

"Sticks on glass."

Overall I was pleased with this divider. Only reason I took a star off was the price. I also found out small fish can easily swim between the gaps on the sides. You can customize the to whichever size you like and the suctions are great. Look closely at the slight taper in the connections to see which way to insert them. Overall this has done the job I've needed to. Very tight fit with hardly any gap.

Overall Score
3.0


(2 Points)

6. Shiroumiya Aquarium Fish Tank Divider Isolation Board for Mixed Breeding Made by PET/PETP

User Ratings: 54 9

Shiroumiya First Impressions

"We'll see."

I have it in a divided ten gallon with two bettas. Works great and we have it holding a divider in a lizard tank. My betta fish even got in fights 3 times because the went through them. I will be buying more of this I recommend them 100%. It is a thick sturdy plastic, and the suction power is strong. Very pleased with this tank divider. I cut it to size using a paper cutter because it was easier than scissors.

  • Shiroumiya Aquarium Fish Tank Divider Isolation Board for Mixed Breeding Made by PET/PETP
  • Manufacture: Aqualantis
  • Editor's Impressions Of The Shiroumiya
  • Quality
  • Value For Money
  • Affordability

Shiroumiya Final Thoughts

"The tank is only 7."

This is THE BEST divider I've found! It comes with MANY suction cups and attachments. It is a thick sturdy plastic, and the suction power is strong. A silicone tray, Charcoal potty pad, and this grid. I used this product to divide my 10gallon tank. The flow holes allowed for ample current and water circulation. The female is on the larger side with her babies.

Overall Score
4.0


(632 Points)

7. JZMYXA Aquarium Fish Tank Divider Suction Cup, 4 Pieces

User Ratings: 63 9

JZMYXA First Impressions

"So I tried and tried."

Look closely at the slight taper in the connections to see which way to insert them. The fry didn't understand so they swam through the sides. I had ordered 3 others before this one. Very good divider for my 20 gal long freshwater aquarium. You can also cut it down to the size of your tank, which was not too difficult to do. I know Betta fish are aggressive, so they must be separated. And now I know they are getting enough to eat.

  • JZMYXA Aquarium Fish Tank Divider Suction Cup, 4 Pieces
  • Fit for bulkhead with thickness of 0.039-0.23 inch(1mm-6mm).
  • Handy clips to divide a bigger fish tank into several.
  • Easy to install in your aquarium fish tank.
  • Suction cup dia:1.14 inches/29 mm.
  • Size: 1.69" x 2" (L X W), 4 Pieces.
  • Manufacture: JZMYXA
  • Product Dimensions: 2 x 1.69 x 0.4 inches; 2.4 Ounces
  • Editor's Impressions Of The JZMYXA
  • Quality
  • Value For Money
  • Affordability

JZMYXA Final Thoughts

"Worked like a charm."

I uploaded a video to demonstrate the barrier in action xD. Fish can't swim to the other side anymore, and it looks super cool. Doing these two things really keeps this thing in place. Would recommend two smaller filters on either side to help water flow. The holes are smaller than some other similar dividers, which is why I chose these. You can also try any other small fish. Small, skinny betta can go through those.

Overall Score
4.1


(100 Points)

8. Alfie Pet - Rishi Aquarium Fish Tank Acrylic Divider Isolation Board (Suction Cup Included)

User Ratings: 50

Alfie First Impressions

"Easy to put in tank."

I'm separating male and female cichlids. I know Betta fish are aggressive, so they must be separated. Description says if they dont go together use zip ties. Very good divider for my 20 gal long freshwater aquarium. This fit PERFECTLY in our 75 gallon aquarium. It dose have good flow between the tanks. It keeps the boys from being able to see each other.

  • Alfie Pet - Rishi Aquarium Fish Tank Acrylic Divider Isolation Board (Suction Cup Included)
  • Measures 10.25-12"L x 11.25"H. The holes are 5mm
  • Those holes are 5mm wide.
  • Made of high-quality acrylic material, providing a good space for the fish.
  • Transparent design and advanced environmental protection materials to provide sufficient protection for your fish safety.
  • We have covered the product with a white protective film, please remove it before use.
  • Manufacture: Alfie
  • Editor's Impressions Of The Alfie
  • Quality
  • Value For Money
  • Affordability

Alfie Final Thoughts

"I tried and tried."

It is a bit tricky to straighten it and clip it, but with a bit of a push, it's fine. Would recommend two smaller filters on either side to help water flow. Even though there are holes in the acrylic the water flow is not the same. It worked well for me and I would highly recommend it to anyone. I mean, it's an aquarium divider lol. 4stars because it says easy to connect peices together. I came back to give it a 4 star review!

Overall Score
4.0


(2 Points)

9. Yohii Aquarium Fish Tank Divider Suction Cup Plastic Sheet Holder Black - 20pcs

User Ratings: 66 10

Yohii First Impressions

"They don't snap together."

And now I know they are getting enough to eat. We have four South American cichlids that do not live in harmony together. It keeps the boys from being able to see each other. 4stars because it says easy to connect peices together. It worked well in my very small 12 gallon show tank. Very good divider for my 20 gal long freshwater aquarium. Barrier is like a plastic mesh screen that allows water to flow through.

  • Yohii Aquarium Fish Tank Divider Suction Cup Plastic Sheet Holder Black - 20pcs
  • Package Content: 20pcs x Divider Sheet Holder
  • They can be used for both salt water tanks and fresh water tanks.
  • Size: Suction Cup Diameter: 3cm/1.2"; Fit Sheet Thickness: 5mm/0.2"
  • Handy clips to divide a bigger fish tank into several compartment for breeding or separation.
  • The suction cup part is made of plastic material, it will stay firmly on the surface of your fish tank or aquarium.
  • Manufacture: Yohii
  • Part Number: C180717053
  • Material: ABS
  • Item Weight: 7.5 ounces
  • Batteries Included?: No
  • Batteries Required?: No
  • Editor's Impressions Of The Yohii
  • Quality
  • Value For Money
  • Affordability

Yohii Final Thoughts

"Excellent product!"

I turn a 10-gallon tank into three, 3. They can see each other but they can't fight. I also found out small fish can easily swim between the gaps on the sides. I did have to bury the bottom in about an inch or so of gravel to keep it in place. You need to use a mallet to connect the panels together. You just need to peel of the protective layer from both sides. Two were forced to spend most of their time in hiding.

Overall Score
4.2


(41 Points)

10. Lifewithpets 20 Gallon High Tank Divider. Check Compatible Tank Below

User Ratings: 61

Lifewithpets First Impressions

"They were all awful!"

You will need fingernails to peel them. I used this product to divide my 10gallon tank. Easy to use and perfect for my tank! You can also cut it down to the size of your tank, which was not too difficult to do. I cam keep my 2 betta fish in the same tank now. This product is one that I would be really sad to see disappear. If you have the divider in the gravel it will not meet the top of the tank.

  • Lifewithpets 20 Gallon High Tank Divider. Check Compatible Tank Below
  • Compatible with Aqueon Tanks size 20 Gallon High 24.25"L x 12.5"W x 16.75H Only. All 20 Gallon High tanks are NOT the same size. Please check tank size before buying.
  • Easy to Install and Maintain - No Suction Cups Required.
  • Made from a solid, sturdy non toxic material.
  • Adjustable Sidebars for the perfect fit
  • Not suitable for reptile tanks unless siliconed in place.
  • Manufacture: Gardner Creative Innovations inc
  • Editor's Impressions Of The Lifewithpets
  • Quality
  • Value For Money
  • Affordability

Lifewithpets Final Thoughts

"Worked perfectly."

You need to use a mallet to connect the panels together. I personally only want to put the separator in for just feeding time. I actually like how tight it fits so it won't get dislocated accidentally. It is thick, well made and a great addition if you have the tank they specified. You need to use a mallet to connect the panels together. For platty fry I reccomend the Petzilla Aquarium Fish Breeder box. This WILL fit an Aqueon tall 10 gallon, but NOT a Top Fin tall 10 gallon.

Overall Score
4.2


(3 Points)

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