Best Aquarium Decor Tank Dividers in 2026

For Aqueon brand 10gal tank ONLY !!! It will not fit Top Fin, Marineland or any other brand's tanks! Don't try, it will NOT fit.

Dimension: 9.95 x11.5 inch

1 acrylic divider (4mm thick cast acrylic), 4 suction cup mounts

This grid divider are made of plastic material, non-toxic and tasteless, won't affect water quality.

Use these divider holders can effectively separate fish and prevent them from biting each other.

This plastic grid can cropped and free splice combination。

Helpful for Aquarium Fish Tank Grid Divider Accessories! Recommended aquarium tank divider is practical for fish separate, convenient for all kinds fish breeding.

Recommended AQUA KT Egg Crate Plastic can be Adjustable According to your need! Free splicing according to the size of the fish tank, also can use as bottom Isolation for fish tank.

Professional Fish Tank Separator was made of Safe Material! Our aquarium tank dividers are made of plastic material, well done in product detail, friendly touching with your love fishes. It is absolute a good choice for for your Fish miss breeding.

Flexibility: Can Be Cut In Any Dimensions,Suitable for Many Small Fish Tank Size.

Safe Matriral: Made By High Quality PET Material,None Toxi Release in Water.Same Material As Bottle Water.

Creative Parts: Offer 6 sets adjustable Isolation Plate Suction Cups,Easily to Fix and Move.

Size:Approx.30cmx15cm/11.8inch*5.9inch

You can easily divide your tank into several compartments with these divider holders.

Use these divider holders for separations of different fish,for breeding and to prevent your fish to fight as well.

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:12 Pcs Fish Tank Filter Bottom Isolate Grid and 15 pcs sucker clip.You can easily divide your fish tank into several compartments with these divider holders for breeding or separation.

FLEXIBLE TO USE:each Fish Tank Divider can be snapped together to make a large panel,also can be cut easily with wire cutter to your desired size to fit your fish tank.

Effectively support the aquarium isolation plate to separate fish and prevent them from fighting. Increasing the survival rate of baby fish, isolating diseased fish and aggressive fish.

6 pack aquarium divider clips can also fix airline tubing, CO2 tubing, power cord of aquarium light, feeding bracket. Can hold separation board horizontally or 45 degree obliquely.

Fit for 0.2 inch thickness fish tank separation board. Measures 2 x 1.6 in. Weighs only 0.26 oz.

Fish tank separator size: 9.76" * 11.4"*0.12" (24.8cm*29cm*3mm), aperture : 0.2" (5mm);Suitable for aquariums with a width of 10 inches, Using laser cutting, the circumference and the hole are smooth, the aperture is well-designed to secure the safety of your fish. (Please measure your tank before purchasing!).

Product material: Eco-friendly, non-toxic, high hardness, corrosion resistance, easy to clean; high transparent acrylic (PMMA), the light transmittance is more than 92%, does not affect the aquarium landscaping and looking, and will make the fish tank more beautiful under the light.

New design: The state of the art design with long holes around, which is Conducive to fish feces through .The holes are denser, allowing more water to pass through.

MEDIUM FOR 10 GALLON TANKS: With our convenient Tank Dividers, there’s no need to worry about getting a second tank to separate fry from parent fish, or to separate certain territorial or aggressive fish from the others! The medium size is perfect for 10 gallon aquariums, and measures 11 3/8” x 9 5/8”.

CUT TO SIZE: In addition to being safe for both freshwater and saltwater tanks, the polymer screen can be trimmed to size. This will allow you to use the Tank Divider in smaller or non-standard sized aquariums. No other modifications needed.

CLEAR, PERFORATED SCREEN: Our Tank Dividers come standard with a clear, perforated screen that’s put into place by two side clips. The screen is designed to not restrict water circulation, filtration, or heating. It’s easy to install, and clean as needed!

Package include: 4PCS black grid dividers and 8PCS sucker clip.

Size: 11.65”x5.9”x0.3”. You can easily divide your fish tank into several compartments with these divider holders for breeding or separation.

Fish tank divider is made of high quality plastic material, avirulent and tasteless, environmental protection won't affect water quality.

Fish tank separator size: 9.75" * 11.8"*0.12" (24.8cm*30cm*3mm), aperture : 0.2" (5mm);Suitable for aquariums with a width of 10 inches, Using laser cutting, the circumference and the hole are smooth, the aperture is well-designed to secure the safety of your fish. (Please measure your tank before purchasing!).

Product material: Eco-friendly, non-toxic, high hardness, corrosion resistance, easy to clean; high transparent acrylic (PMMA), the light transmittance is more than 92%, does not affect the aquarium landscaping and looking, and will make the fish tank more beautiful under the light.

New design: The state of the art design with long holes around, which is Conducive to fish feces through . It can be reused, whether you are a 10-gallon fish tank, a 20-gallon(extra high) fish tank(need 2 piece) .

Size: 11.65x5.9x0.3inch. You can easily divide your fish tank into several compartments with these divider holders for breeding or separation.

Made of food-grade plastic material, avirulent and tasteless, environmental protection won't affect water quality.

The 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.

<p><b>perfect fit the US standard tank size</b></p>

<p><b>Easy maintenance, easy to clean, soft cloth scrub</b></p>

<p><b>perfect light transmission, up to 92%</b></p>

Divider size: 10-inch by 12-inch

Fits most 10-gallon aquariums

Maintains overall heat circulation and unobstructed filtration

20 gallon fish tank divider ONLY! (Does not include aquarium). Approx 12in x 12in. Please measure your tank before purchasing!

Suction cups that attach divider on top and bottom of aquarium

Pins that hold mesh and side/top rails together

This tank divider is great for breeding purposes and many others, for example to keep baby fish separate from more aggressive fish.

Tank Divider-Super fits 25-29 gallon aquariums.

Turn you tank into two aquariums while filtration and heat complely circulate thoughout.

Penn-Plax Tank Dividers instantly convert one aquarium into two!

Quick and easy to install, these polymer screen dividers are great for creating breeding tanks or for separating rough fish.

The perforated screen allows unrestricted circulation and filtration and even heat flow.

8 PCS per package, easy to install in your aquarium fish tank.

Made of rubber and plastic, no smell and no harm to your fish.

Sucker holder groove fit for 5mm Thickness Fish tank divider.

Fish tank grid is made of PVC material, slightly submerged and has good toughness.

It is very convenient to adopt the receiving type butt-joint installation.

Can be spliced at will. Good water permeability

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:30cmx30cm/11.8"*11.8"*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.

FLEXIBLE TO USE:each Fish Tank Divider can be snapped together to make a large panel,also can be cut easily with wire cutter to your desired size to fit your fish tank.

Compatible with Almost Any Shape of 10-950 Gallon Fish Tank with Suction Cups:Measure the inner width of the 2 points in your tank where you would like to divide the tank and the inside water level height, then choose the model and quantity of the divider kit fit for your tank . Our aquarium dividers are compatible with almost all types and all sizes of fish tank.

Non-decomposable,Easy to Clean and Works Long Time:Not like the mesh divider- a year some of them start disintegrating,falling apart and leaving holes,this fish tank divider is made with brocken-proof and firm & clear material which is durable and always keeps in a brand-new condition withouth too much maintainance.

Smaller Gaps on Either Sides Due to Small Screwable & Water Circulation Holes all over the Divider:The divider holes are very small which are only 4.2mm diamter, it allows water circulation,straws fixing and stop most of fishes from swimming through.Holes all around the divider pieces and make the widths and height of the assembling divider finely adjustable to achieve small gap between the tank sides.

Measures 10-12.25"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.

[Premium material] The fish tank partition is made of acrylic, which is sturdy and durable, and you don't have to worry about it breaking when you use it. And the fish drying separator has high light transmittance, which can clearly observe the situation in the water.

[Practical design] Our fish tank divider has two different holes, which has different roles. The role of long hole is to prevent fish and shrimp from running out, and the role of round hole is to let the water flow. Moreover, there is a manure gutter drain, which can make your water stay fresh.

[Wide application] This fish tank divider is very suitable for the fish farm and aquarium, which can raise different types of fish at the same time. And this fish tank divider effectively separate the fish and avoid bites each other.

Package Quantity--You will receive 2 pcs large white grid dividers + 2 pcs small white grid dividers + 6 pcs white sucker clip.

Grid Divider Size--There are 2 sizes of 30cm*30cm*0.8mm(Large)and 30cm*15cm*0.8mm(Small),each size has 2 pieces.You can use these grid dividers to easily divide your fish tank into compartments for breeding or separation.

Durable Material--These egg crate grid dividers are made of plastic.Sturdy and durable,safe and odor-free,it will not affect the water quality,so you can use it with confidence.

【PACKAGE INCLUDED】8pcs aquarium divider isolation boards and 10pcs sucker clips, by taking care of your needs we think this quantities is enough for your use.

【ABOUT THE SIZE】Each plastic grid is approximately 30cm x 15 cm/11.81” x5.9”. You can use the aquarium dividers to divide the aquarium into several compartments to breed or separate as you need.

【HIgh QUALITY MATERIAL】PetierWeit aquarium pane separator filter is made of high quality plastic, which is durable and safe. It will not affect the water quality of the fish tank or do harm to your fish and other aquatic plants.

Function:A fish tank divider can be used to separate a tank into sections while still allowing water to flow freely.It's useful when you need to keep fishes apart for safety,breeding,or other reasons.

SIZE and Material:30cmx15cm/11.8" x 5.9" x 0.3",the gap size is about 7/16" square.Our egg crates are made of plastic.They are not sharp and do not do harm to your fish.

Easy to Use:Measure the height and width of your tank where you want to divide it.Use these measurements to determine how large the the egg crates need to be.You can cut it to size if it is too big,or combine pieces of the dividers if it is small into your tank.

High Quality Material: Aquarium divider tray is made of PVC material, which has good toughness and has a good life span and can be used in the water for a long time.

Assemblable Design: Aquarium filter bottom is very easy to install by receiving type docking, it can be spliced at will and freely spliced according to the needed space size to meet your needs.

Improve Fish Tank Environment: fish tank grid can improve the bottom material sedimentation, bottom gravel clumping, it is a good accessory for breeding fish, marine fish and making fish tank.

This grid divider are made of plastic material, non-toxic and tasteless, won't affect water quality.

Use these divider holders can effectively separate fish and prevent them from biting each other.

This plastic grid can cropped and free splice combination。

Fish Tank Divider: Designed to effectively separate different types of fishes and prevent them from biting each other. Separations of different fish for breeding. Increasing the survival rate of baby fish, isolating diseased fish and aggressive fish

Quality Material: Made of eco-friendly, non-toxic high transparent acrylic (PMMA), the light transmittance is more than 92%, does not affect the aquarium landscaping and looking, and will make the fish tank more beautiful under the light

Easy to Install: You can install it using the suction cup included in the box. It only takes you few minuets to install and it doesn’t occupy too much space, leaving enough room for the other fish to swim around in the tank

Seperates aggressive fish, breeding fish or fry.

Pins that hold mesh and side/top rails together.

Seperates fish without extra filteration or heaters needed.