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

1. 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 [star rating='4.5']
  • Value For Money [star rating='4.8']
  • Affordability [star rating='4.3']

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

[star rating="4"]
(632 Points)

2. 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
  • Quality [star rating='3.6']
  • Value For Money [star rating='4.4']
  • Affordability [star rating='4.7']

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

[star rating="4.3"]
(51 Points)

3. Balacoo 8pcs Grid Divider Tray Aquarium Fish Tank Bottom Isolation Bottom Black Filter Tray Aquarium...

Balacoo L1DWO59OB05IVQTLWXWL10S First Impressions

"Works well."

The gravel along with the quick trim left no gaps for me. It worked well in my very small 12 gallon show tank. I got this to keep my albino Koi guppies separated from my fancy males. My only small issue with it is the way it attaches to the tank. I mean, it's an aquarium divider lol. Holes are big enough for good circulation throughout the tank. Look closely at the slight taper in the connections to see which way to insert them.

  • Balacoo 8pcs Grid Divider Tray Aquarium Fish Tank Bottom Isolation Bottom Black Filter Tray Aquarium Crate
  • Plastic Fish Tank Isolation Divider Filter Grid Plate Patition Board Aquarium Net Divider Holder Segregation Board
  • Fish tank divider is made of food-grade plastic material, avirulent and tasteless, environmental protection wont affect water quality.
  • 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.
  • You can easily divide your fish tank into several compartments with these divider holders for breeding or separation.
  • This plastic grid can cropped and free splice combination, and the sucker clip can be fixed anywhere in the aquarium.
  • Manufacture: Balacoo
  • Product Dimensions: 11.81 x 5.91 x 0.31 inches; 13.12 Ounces
  • Editor's Impressions Of The Balacoo L1DWO59OB05IVQTLWXWL10S
  • Quality [star rating='4.1']
  • Value For Money [star rating='4.1']
  • Affordability [star rating='4.4']

Balacoo L1DWO59OB05IVQTLWXWL10S Final Thoughts

"Had to go another way."

Make sure to set it up in the middle of the water pump. They can see each other but they can't fight. My male bettas could see each other along the top of the divider. My only small issue with it is the way it attaches to the tank. I have it in a divided ten gallon with two bettas. I have it in a divided ten gallon with two bettas. And if you fill your tank very full with water they can swim over the divider.

Overall Score
5.0

[star rating="5"]
(5 Points)

4. 4X Aquarium Fish Tank Plastic Clips Glass Cover Strong Support Holders 10mm

User Ratings: 55 9

Generic First Impressions

"The choice is yours!"

Very pleased with this tank divider. Overall this has done the job I've needed to. Second- Do not recommend for bettas or small fish! I mean, it's an aquarium divider lol. I've bought several of these to divide my betta's and they've been great! I cut it to size using a paper cutter because it was easier than scissors. It's good for what I needed it for.

  • 4X Aquarium Fish Tank Plastic Clips Glass Cover Strong Support Holders 10mm
  • Manufacture: Generic
  • Editor's Impressions Of The Generic
  • Quality [star rating='4']
  • Value For Money [star rating='4.7']
  • Affordability [star rating='3']

Generic Final Thoughts

"Sold separately."

That was another battle trying to get those on. Works great and we have it holding a divider in a lizard tank. Barrier is like a plastic mesh screen that allows water to flow through. That was another battle trying to get those on. Two were forced to spend most of their time in hiding. I turn a 10-gallon tank into three, 3. You will need fingernails to peel them.

Overall Score
3.9

[star rating="3.9"]
(25 Points)

5. DOHO Aquarium Divider Grid Isolate Board Fish Tank Bottom Black Filter Tray Aquarium Crate (11.8 x 5...

User Ratings: 49 5

DOHO First Impressions

"They worked like a charm."

I did not receive suction cups but I had my own to it did what I was looking for. Would recommend two smaller filters on either side to help water flow. Easy to use and perfect for my tank! Will certainly be buying more of these! Actually adds additional filtration I think. My betta fish even got in fights 3 times because the went through them. Not worried about the small fish due to the size of the fry.

  • DOHO Aquarium Divider Grid Isolate Board Fish Tank Bottom Black Filter Tray Aquarium Crate (11.8 x 5.9inch,Black) 6 Pcs
  • Aquarium divider made of food-grade plastic material, environmental protection won't affect water quality.
  • This item can cropped and free splice combination.
  • Effectively separate the fish and avoid bites each other.
  • Size: 30cmx15cm/11.8"*5.9"
  • Package Included:6Pcs black grid dividers and 6Pcs suction cups
  • Manufacture: DOHO
  • Editor's Impressions Of The DOHO
  • Quality [star rating='4.8']
  • Value For Money [star rating='3.3']
  • Affordability [star rating='4.5']

DOHO Final Thoughts

"Great customer service."

Doing these two things really keeps this thing in place. It was slightly long so I had to trim off the bottom edge to make it fit. Worth it though if you have money to blow. 6-25-19- I had to make a minor adjustment to my divider. Very sturdy, has clips on the sides to keep in place. The connection joints are very snug. It was slightly long so I had to trim off the bottom edge to make it fit.

Overall Score
3.9

[star rating="3.9"]
(29 Points)

6. POPETPOP 5 Pcs Aquarium Divider - Aquarium Isolation Board Fish Tank Divider with Supporty Feet Fish...

POPETPOP First Impressions

"But it keeps adults in."

Make sure to set it up in the middle of the water pump. Very few problems just a couple things to keep in mind when buying. There are slots along the top that they can see through. This product is one that I would be really sad to see disappear. There were scratches when we got this so I originally gave it one star review. The divider itself works very well and seems sturdy. I actually like how tight it fits so it won't get dislocated accidentally.

  • POPETPOP 5 Pcs Aquarium Divider - Aquarium Isolation Board Fish Tank Divider with Supporty Feet Fish Tank Divider Isolation Board for Aquarium Breeding - White
  • It is good accessory for breeding large dragon fish, sea fish and making fish tanks.
  • Fish tank isolation board Flat and smooth, it is safe for fish.
  • Aquarium tank divider Can be spliced at will. Good water permeability.
  • Fish divider for aquarium.It is very convenient to use and install.
  • This product is made of PVC material, slightly submerged and has good toughness.
  • Manufacture: POPETPOP
  • Product Dimensions: 10.63 x 7.87 x 0.51 inches; 1.54 Pounds
  • Editor's Impressions Of The POPETPOP
  • Quality [star rating='5']
  • Value For Money [star rating='4.5']
  • Affordability [star rating='4.9']

POPETPOP Final Thoughts

"Let's face it."

Holes are drilled evenly and it will divide fish 1. My only small issue with it is the way it attaches to the tank. There are slots along the top that they can see through. I will be buying more of this I recommend them 100%. There were scratches when we got this so I originally gave it one star review. You need to use a mallet to connect the panels together. Overall I was pleased with this divider.

Overall Score
5.0

[star rating="5"]
(1 Points)

7. spritool DIY Designed Clear Easy to Bent Cut and Assemble for Most Fish Tanks (Suction Cups are Incl...

User Ratings: 49 15

spritool First Impressions

"Kept fish apart."

I got this to keep my albino Koi guppies separated from my fancy males. The product comes with many small plastic pieces. It was a bit too wide for my tank, so I cut it a bit and it's perfect. Works great and we have it holding a divider in a lizard tank. I did have to bury the bottom in about an inch or so of gravel to keep it in place. I would much rather be able to see my whole tank the rest of the day. The product comes with many small plastic pieces.

  • spritool DIY Designed Clear Easy to Bent Cut and Assemble for Most Fish Tanks (Suction Cups are Included)
  • Product size 11.8`` * 11.8`` (30CM*30CM), suitable for most standard or non-standard American fish tanks
  • Transparent partition design (with white protective film to be removed before use), can be bent, cut, assembled
  • After installation, you can easily separate the fish tank into the size you need, and we consider that it does not affect the aesthetics of your fish tank. We use transparent design and high-grade environmentally friendly materials to provide adequate protection for your fish safety.
  • We have a variety of sizes to choose from, and won't be affected because your tank size is not non-standard.
  • Advantage: Increasing The Survival Rate of Baby Fish,Isolating Diseased Fish And Aggressive Fish.
  • Manufacture: Spritool
  • Editor's Impressions Of The spritool
  • Quality [star rating='4']
  • Value For Money [star rating='3.5']
  • Affordability [star rating='4.3']

spritool Final Thoughts

"I love this!"

It assembled quickly and painlessly. And if you fill your tank very full with water they can swim over the divider. You will have to cut them to fit any other size aquarium. There are slots along the top that they can see through. I got this so I could put two male bettas in a tank. Description says if they dont go together use zip ties. Third- pull the divider all the way up.

Overall Score
3.9

[star rating="3.9"]
(52 Points)

8. 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
  • Quality [star rating='3.4']
  • Value For Money [star rating='3.5']
  • Affordability [star rating='4.4']

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

[star rating="3.9"]
(27 Points)

9. Ujuuu 4 Pieces Fish Tank Divider 11.8Inchx 5.9Inch Fish Tank Bottom Filter Grid Suitable for for Bra...

Ujuuu First Impressions

"They are plastic grids."

I've bought several of these to divide my betta's and they've been great! Even though there are holes in the acrylic the water flow is not the same. Would recommend two smaller filters on either side to help water flow. There are slots along the top that they can see through. Didn't ruin the look of the tank nor interfere with tank filter system. I had an oddly aggressive Molly and this worked great for the time I needed to use. No matter what size betta I put I know it won't go through the divider.

  • Ujuuu 4 Pieces Fish Tank Divider 11.8Inchx 5.9Inch Fish Tank Bottom Filter Grid Suitable for for Brackish Water Grid Tank Divider Tray for Mixed Breeding
  • Simple Installation: Just put one on top of the other and push down to slide the male buckle into the female buckle. You cannot push horizontally.If you cannot connect these grids together,it is recommended to use cable ties.
  • Function: Use this divider to prevent them from biting each other and effectively separate the fish. Improve the survival rate of juvenile fish, isolate diseased fish and aggressive fish.
  • Package Includes: 4 pieces white grid dividers, you can easily divide your fish tank into several compartments, these divider holders are used for reproduction or separation.
  • Dimension: 11.8 inches x 5.9 inches / 30 cm x 15 cm.
  • Multifunctional Divider: The fish tank divider can be used to separate a fish that has started to become too aggressive, raise the rock in the waterscape to a datum level in the aquarium, make a turtle ramp for your turtle habitat, or do some In other diy projects, the use of partitions has unlimited possibilities.
  • Manufacture: Aika Designs
  • Item Weight: 6.9 ounces
  • Editor's Impressions Of The Ujuuu
  • Quality [star rating='2.3']
  • Value For Money [star rating='2.9']
  • Affordability [star rating='3.5']

Ujuuu Final Thoughts

"3-gallon tanks."

I also found out small fish can easily swim between the gaps on the sides. It keeps the boys from being able to see each other. You can customize the to whichever size you like and the suctions are great. The only con is that it's see through. However, keep in mind this tank divider does not fit just ANY 10 gallon! So if you have the exact tank, it would be perfect. Third- pull the divider all the way up.

Overall Score
3.0

[star rating="3"]
(1 Points)

10. JiaUfmi 4 Pcs Grid Divider Tray Egg Crate Louvre Aquarium Fish Tank Bottom Isolation

User Ratings: 72

JiaUfmi First Impressions

"Great water flow."

Even though there are holes in the acrylic the water flow is not the same. It is a bit tricky to straighten it and clip it, but with a bit of a push, it's fine. So I'm writing this to tell you you step on them. Look closely at the slight taper in the connections to see which way to insert them. I also found out small fish can easily swim between the gaps on the sides. They can see each other but they can't fight. I found these and now have 6 of them for my male bettas.

  • JiaUfmi 4 Pcs Grid Divider Tray Egg Crate Louvre Aquarium Fish Tank Bottom Isolation
  • HIGH QUALITY - These black grid divider are made of food-grade plastic material, environmental protection won't affect water quality
  • PRACTICAL AND DURABLE - You can easily divide your tank into several compartments with these divider holders. This plastic grid can cropped and free splice combination
  • PRODUCT DETAIL - 4 Pcs Black Grid Dividers. Size(L*W): approx. 30 x 15cm / 11.8 x 5.9 inch, grid: 1 x 1cm / 0.4 x 0.4 inch. Package included: 4 x egg crate aquarium
  • FEATURE - You can easily divide your tank into several compartments with these divider holders
  • AFTER-SALE SERVICE - We are committed to creating the best customer service for you,If you are unsatisfied, contact us.You will receive a 100% refund and lifetime warranty
  • Manufacture: JiaUfmi
  • Editor's Impressions Of The JiaUfmi
  • Quality [star rating='4.8']
  • Value For Money [star rating='5']
  • Affordability [star rating='4.4']

JiaUfmi Final Thoughts

"Works as intended!"

6-25-19- I had to make a minor adjustment to my divider. I cam keep my 2 betta fish in the same tank now. We have four South American cichlids that do not live in harmony together. I personally only want to put the separator in for just feeding time. Holes are big enough for good circulation throughout the tank. It was slightly long so I had to trim off the bottom edge to make it fit. They look like the edging that's on the tanks, so it's as attractive as possible.

Overall Score
4.7

[star rating="4.7"]
(8 Points)

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