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

1. 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
  • Quality
  • Value For Money
  • Affordability

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)

2. YDZN Aquarium Fish Tank Isolation Plate Divider Filter Patition Board Net Divider,11.81''x5.91''

User Ratings: 51 24

YDZN First Impressions

"Go together easy."

It's great products, fit perfectly and fast shipping. It is difficult to move the side bars to move out to close the gaps. It is thick, well made and a great addition if you have the tank they specified. I had an oddly aggressive Molly and this worked great for the time I needed to use. Very good divider for my 20 gal long freshwater aquarium. It was a bit too wide for my tank, so I cut it a bit and it's perfect. Not sure I would recommend it for fry however.

  • YDZN Aquarium Fish Tank Isolation Plate Divider Filter Patition Board Net Divider,11.81''x5.91''
  • ★These are suction cup based aquarium divider holders.
  • ★ Easy to install in your aquarium tank.
  • ★Use with divider sheet thickness 4mm.
  • ★Handy clips to divide a bigger fish tank into several compartment for breeding or separation.
  • ★Slot Width At The Bottom: Approx. 10 mm,Slot Width At The Top: Approx. 5 mm.
  • Manufacture: YDZN
  • Editor's Impressions Of The YDZN
  • Quality
  • Value For Money
  • Affordability

YDZN Final Thoughts

"Definitely not easy."

4stars because it says easy to connect peices together. Not sure I would recommend it for fry however. I cam keep my 2 betta fish in the same tank now. It dose have good flow between the tanks. Make sure to set it up in the middle of the water pump. It's good for what I needed it for. Will certainly be buying more of these!

Overall Score
3.5


(7 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. 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
  • Value For Money
  • Affordability

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


(29 Points)

5. Aqua KT Fish Tank Divider Sheet Holder Suction Cups

User Ratings: 66 3

Aqua KT First Impressions

"Perfect egg tray."

It worked well in my very small 12 gallon show tank. It is a thick sturdy plastic, and the suction power is strong. Don't think so, unless it’s not in water. It worked well in my very small 12 gallon show tank. This is a great option for keeping two bettas in the same tank! It assembled quickly and painlessly. Only for betta fish since I own them.

  • Aqua KT Fish Tank Divider Sheet Holder Suction Cups
  • 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.
  • Use these divider holders for separations of different fish, for breeding and to prevent your fish to fight as well.
  • Handy clips to divide a bigger fish tank into several compartments for breeding or separation.
  • Manufacture: Aqua KT
  • Editor's Impressions Of The Aqua KT
  • Quality
  • Value For Money
  • Affordability

Aqua KT Final Thoughts

"Easy to put in tank."

I created an inexpensive portable indoor potty for my little dog. They can see each other but they can't fight. This product is one that I would be really sad to see disappear. I used this to separate my two Betta fish in a 10 gallon tank. Very pleased with this tank divider. This are black in they stick to the tank not like glue or anything lol. Overall I was pleased with this divider.

Overall Score
4.4


(51 Points)

6. 5pcs Divider Sheet Holder Suction Cup for Aquarium Fish Tank

User Ratings: 65 3

MECO First Impressions

"Good price."

My only small issue with it is the way it attaches to the tank. And if you fill your tank very full with water they can swim over the divider. I am going to put a Male betta on each side. Get this if your dividing your tank for betta fish. You can also try any other small fish. It is easy to install but, careful not to lose anything. There are slots along the top that they can see through.

  • 5pcs Divider Sheet Holder Suction Cup for Aquarium Fish Tank
  • Easy to install in your aquarium tank.
  • You can easily divide your tank into several compartments with these divider holders.
  • Handy clips to divide a bigger fish tank into several compartment for breeding or separation.
  • Use these divider holders for separations of different fish, for breeding and to prevent your fish to fight as well.
  • With suction cup clamp, horizontal or vertical isolation space free, or as a fish tank base or a small accessory for fish tank landscaping.
  • Manufacture: Elecday
  • Editor's Impressions Of The MECO
  • Quality
  • Value For Money
  • Affordability

MECO Final Thoughts

"Thank you!"

The holes are smaller than some other similar dividers, which is why I chose these. They look like the edging that's on the tanks, so it's as attractive as possible. I bought these clear suction cups separately. I'm not using it but keeping it in case. Third- pull the divider all the way up. I turn a 10-gallon tank into three, 3. Overall I was pleased with this divider.

Overall Score
4.2


(43 Points)

7. 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
  • Quality
  • Value For Money
  • Affordability

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)

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
  • Value For Money
  • Affordability

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)

9. Sirozi 4 Pcs Aquarium Divider Tray, Fish Tank Divider Filter Plastic Grid Aquarium Egg Crate Diffuse...

User Ratings: 31 19

Sirozi First Impressions

"Worked like a charm!"

You will need fingernails to peel them. Don't think so, unless it’s not in water. I turn a 10-gallon tank into three, 3. They can see each other but they can't fight. I cut it to size using a paper cutter because it was easier than scissors. You will need fingernails to peel them. I created an inexpensive portable indoor potty for my little dog.

  • Sirozi 4 Pcs Aquarium Divider Tray, Fish Tank Divider Filter Plastic Grid Aquarium Egg Crate Diffuser with 6 Pieces Sucker Clips for Mixed Breeding, Fish Tank Bottom Isolation(White)
  • Value set: The package contains 4 white aquarium partition grid plates, and comes with 6 suction cup clips,The suction cup holder can be used to fix the isolation grid at any position in the fish tank
  • Size: The size of the aquarium isolation grid board is 11.8 X 6 inches, and the size of each grid hole is 0.39 inches, which is enough to ensure that your fish will not pass through or get stuck(Not suitable for fish smaller than mesh holes)
  • Safety material: The isolation board is made of high-quality PVC plastic, environmentally friendly and tasteless, will not affect the water quality of the aquarium, suitable for salt water and fresh water tanks
  • Flexibility: The product can be cut and spliced freely, and the size can be adjusted according to the size of your aquarium, suitable for many small fish tanks
  • Multi-function: These separation grids can effectively separate fish flesh, avoid fish from biting each other, fish separate and breed, convenient for cleaning manure, turtle ramp, or other DIY projects
  • Manufacture: Sirozi
  • Editor's Impressions Of The Sirozi
  • Quality
  • Value For Money
  • Affordability

Sirozi Final Thoughts

"And transparent."

It comes in clear so I had to rough up both sides to make it opaque. It is a bit tricky to straighten it and clip it, but with a bit of a push, it's fine. For platty fry I reccomend the Petzilla Aquarium Fish Breeder box. Small, skinny betta can go through those. I cut it to size using a paper cutter because it was easier than scissors. And I've been in the hobby a long time! I've bought several of these to divide my betta's and they've been great!

Overall Score
3.1


(6 Points)

10. OBANGONG 6 Pcs Grid Divider Tray Egg Crate Louvre Aquarium Fish Tank Bottom Isolation

User Ratings: 67 5

OBANGONG First Impressions

"Works great."

The only con is that it's see through. Easy to use and perfect for my tank! Not worried about the small fish due to the size of the fry. This product is one that I would be really sad to see disappear. I personally only want to put the separator in for just feeding time. My male bettas could see each other along the top of the divider. Take it from us— follow the instructions about what type to use!

  • OBANGONG 6 Pcs Grid Divider Tray Egg Crate Louvre Aquarium Fish Tank Bottom Isolation
  • 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.
  • Handy clips to divide a bigger fish tank into several compartment for breeding or separation.
  • Package Included:2 Pcs White Grid Dividers 4 Pcs Black Grid Dividers
  • Manufacture: Clarity Deals
  • Editor's Impressions Of The OBANGONG
  • Quality
  • Value For Money
  • Affordability

OBANGONG Final Thoughts

"Works pretty well."

It is a thick sturdy plastic, and the suction power is strong. That was another battle trying to get those on. The product comes with many small plastic pieces. Works great and we have it holding a divider in a lizard tank. Fish can't swim to the other side anymore, and it looks super cool. Holes are drilled evenly and it will divide fish 1. Second- Do not recommend for bettas or small fish!

Overall Score
4.3


(59 Points)

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