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

1. CoscosX 50 Pcs 2 Ways Transparant Aquarium Air Valve Connectors Plastic Inline Splitter Pump Tubing ...

User Ratings: 67 6

CoscosX First Impressions

"What I expected."

The flow holes allowed for ample current and water circulation. First- When dividing a 10 gallon tank the flow is not the same. It dose have good flow between the tanks. This product is one that I would be really sad to see disappear. I did have to bury the bottom in about an inch or so of gravel to keep it in place. This fit PERFECTLY in our 75 gallon aquarium. The fry didn't understand so they swam through the sides.

  • CoscosX 50 Pcs 2 Ways Transparant Aquarium Air Valve Connectors Plastic Inline Splitter Pump Tubing Connectors Fish Tank Pond Air Line Connector for Fish Tank 4MM Airline Tube
  • SAFTY MATERIA: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:30cmx15cm/11.8"*5.9"*0.3";Package includes:8 Pcs Fish Tank Filter Bottom Isolate Grid and 10 pcs sucker clip.You can easily divide your fish tank into several compartments with these divider holders for breeding or separation.
  • EASY TO USE:Grid divider can be cut and spliced,and the Clip can be fixed anywhere in the aquarium,making it more convenient to use
  • Using grid divider can effectively separate fish and prevent them from biting each other.Increasing the survival rate of baby fish,isolating diseased fish and aggressive fish.
  • Handy clips to divide a bigger fish tank into several compartment for breeding or separation.Suitable for:Isolate fish,build platform,bottom filter.
  • Manufacture: Dream-Wonderland
  • Editor's Impressions Of The CoscosX
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CoscosX Final Thoughts

"Great product."

And I've been in the hobby a long time! I turn a 10-gallon tank into three, 3. So if you have the exact tank, it would be perfect. I cam keep my 2 betta fish in the same tank now. I had an oddly aggressive Molly and this worked great for the time I needed to use. Overall this has done the job I've needed to. A silicone tray, Charcoal potty pad, and this grid.

Overall Score
4.3


(51 Points)

2. Alfie Pet - Comi Hang-on Nursery Fish Tank with Isolation Breeding Hatchery

User Ratings: 47 7

Alfie First Impressions

"I think these are great."

It is thick, well made and a great addition if you have the tank they specified. I would much rather be able to see my whole tank the rest of the day. It is easy to install but, careful not to lose anything. Perfect fit, easy to install, and ideal design. I'll keep it for separating parts of my tank as I plant new areas but not for fry. You can customize the to whichever size you like and the suctions are great. Not sure I would recommend it for fry however.

  • Alfie Pet - Comi Hang-on Nursery Fish Tank with Isolation Breeding Hatchery
  • This nursery fish case measures: 8" long; 4" wide and 4" high.
  • Ideal as maturation tank for fry, or isolation tank for aggressive or injured fish.
  • Removable center divider allows two fish to be safely isolated.
  • Space saving design that hangs on the inside of the aquarium.
  • Please remove the protection film before use.
  • Manufacture: Alfie
  • Product Dimensions: 11 x 5.7 x 1.6 inches; 3.2 Ounces
  • Editor's Impressions Of The Alfie
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Alfie Final Thoughts

"Easy to put in tank."

Very pleased with this tank divider. Fish can't swim to the other side anymore, and it looks super cool. I got this to keep my albino Koi guppies separated from my fancy males. Easy to use and perfect for my tank! Don't think so, unless it’s not in water. I would much rather be able to see my whole tank the rest of the day. There are slots along the top that they can see through.

Overall Score
3.9


(147 Points)

3. 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
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  • Value For Money
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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)

4. BCP 12 Pieces Plastic Suction Cup Divider Holder for Aquarium Fish Tank

User Ratings: 59 14

Generic First Impressions

"The choice is yours!"

My only small issue with it is the way it attaches to the tank. The fry didn't understand so they swam through the sides. The flow holes allowed for ample current and water circulation. It is easy to install but, careful not to lose anything. Overall I was pleased with this divider. First- When dividing a 10 gallon tank the flow is not the same. Will certainly be buying more of these!

  • BCP 12 Pieces Plastic Suction Cup Divider Holder for Aquarium Fish Tank
  • Package Included:12-pieces
  • Color:Black
  • Easy to install in your aquarium tank
  • Handy clips to divide a bigger fish tank into several compartment for breeding or separation
  • Suction Cup Diameter:1-1/8 inch; Fit Glass Thickness: 5mm/0.2"
  • Manufacture: BCP
  • Product Dimensions: 3 x 0.75 x 2.25 inches; 3.2 Ounces
  • Editor's Impressions Of The Generic
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Generic Final Thoughts

"So I tried and tried."

You can customize the to whichever size you like and the suctions are great. Holes are drilled evenly and it will divide fish 1. I came back to give it a 4 star review! Barrier is like a plastic mesh screen that allows water to flow through. It is thick, well made and a great addition if you have the tank they specified. It comes in clear so I had to rough up both sides to make it opaque. Not sure I would recommend it for fry however.

Overall Score
3.9


(27 Points)

5. MTMTOOL Aquarium Isolation Plate Fish Tank Divider Filter Suction Cup Divider Holders Bracket

User Ratings: 61 7

MTMTOOL First Impressions

"A+ in my book!"

I know Betta fish are aggressive, so they must be separated. And now I know they are getting enough to eat. The divider itself works very well and seems sturdy. It was a bit too wide for my tank, so I cut it a bit and it's perfect. It dose have good flow between the tanks. Got it for my bettas fish,male and female. I have to trim off about a quarter inch and then they work just fine.

  • MTMTOOL Aquarium Isolation Plate Fish Tank Divider Filter Suction Cup Divider Holders Bracket
  • Each divider has two suction cups and the suction cup diameter is 28mm/1.1".
  • Made of high quality plastic,durable,wear-resistant and long-lasting.
  • The isolation divider is suitable for 4mm/5mm/6mm(0.2") glass partitions.
  • Bottom Slot Width:7mm/0.3"(Approx.);Top Slot Width:5mm/0.2"(Approx.).
  • Stick the clip to the inner wall of the fish tank with a suction cup,divide a bigger fish tank into several compartment for breeding or separation.
  • Manufacture: MTMTOOL
  • Editor's Impressions Of The MTMTOOL
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MTMTOOL Final Thoughts

"It's fairly easy to do."

Small, skinny betta can go through those. No it doesnt come with the suction cups. I uploaded a video to demonstrate the barrier in action xD. The first time we tried using this, we cracked an empty one. You need to use a mallet to connect the panels together. I had an oddly aggressive Molly and this worked great for the time I needed to use. You just need to peel of the protective layer from both sides.

Overall Score
4.2


(44 Points)

6. 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
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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)

7. 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
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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)

8. 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
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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)

9. Lifewithpets 20 Gallon Long Aquarium Tank Divider (3 Pack) Check Compatible Tank Below.

User Ratings: 53 12

Lifewithpets First Impressions

"We'll see."

I know Betta fish are aggressive, so they must be separated. It comes in clear so I had to rough up both sides to make it opaque. This was clear, easy to install, and well made. It is a bit tricky to straighten it and clip it, but with a bit of a push, it's fine. I did not receive suction cups but I had my own to it did what I was looking for. I used this product to divide my 10gallon tank. The product comes with many small plastic pieces.

  • Lifewithpets 20 Gallon Long Aquarium Tank Divider (3 Pack) Check Compatible Tank Below.
  • Compatible with Aqueon 20 gallon long tanks Only. Size 30.25 x 12.5 x 12.75
  • Easy to install and maintain - No Suction Cups Required
  • Made from solid and sturdy non toxic material
  • Adjustable sidebars for the perfect fit
  • Not suitable for reptile tanks unless siliconed in place.
  • Manufacture: Gardner Creative Innovations Inc
  • Item Weight: 2.4 Pounds
  • Editor's Impressions Of The Lifewithpets
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Lifewithpets Final Thoughts

"Excellent product!"

They can still see each other and try to fight through the barrier but its a no go. So if you have the exact tank, it would be perfect. There were scratches when we got this so I originally gave it one star review. I got this to keep my albino Koi guppies separated from my fancy males. Take it from us— follow the instructions about what type to use! You can also try any other small fish. It is easy to install but, careful not to lose anything.

Overall Score
3.8


(13 Points)

10. Lifewithpets 10 Gallon Aquarium Tank Divider. Perfect for Betta Fish Tanks. Check Compatible Tank Be...

User Ratings: 62 10

Lifewithpets First Impressions

"Otherwise very good."

You can customize the to whichever size you like and the suctions are great. I have to trim off about a quarter inch and then they work just fine. Nice, thick and attractive divider. They can still see each other and try to fight through the barrier but its a no go. Barrier is like a plastic mesh screen that allows water to flow through. So I divided it allowing me to have 2 tanks in one large tank. I mean, it's an aquarium divider lol.

  • Lifewithpets 10 Gallon Aquarium Tank Divider. Perfect for Betta Fish Tanks. Check Compatible Tank Below. NO Suction Cups Required.
  • ONLY compatible with Aqueon tank size 20.25”x10.5”x12.6”. All 10 Gallon tanks are NOT the same size. PLEASE check tank size before buying.
  • Easy to install and maintain - No Suction Cups Required. An installation video link is provided on the instruction sheet.
  • 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
  • Item Weight: 1 Pounds
  • Editor's Impressions Of The Lifewithpets
  • Quality
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Lifewithpets Final Thoughts

"However, I bought the 15."

It's great products, fit perfectly and fast shipping. Very tight fit with hardly any gap. My dog can use her indoor potty and keep clean and dry above the pad. It assembled quickly and painlessly. This fit PERFECTLY in our 75 gallon aquarium. Look closely at the slight taper in the connections to see which way to insert them. Small, skinny betta can go through those.

Overall Score
4.2


(72 Points)

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