Had to cut down with die grinder to fit a 10 gallon tank. A little pricey for having to cut it down myself.Make sure you get the divider straight and properly placed in the tank and it works great. Unfortunately I did not do it perfectly and did not notice until we couldn’t find my son’s betta. Turned out because I had it crooked it was able to pass through to the other side where my daughter’s betta was. Luckily neither killed the other but he did lose half his tale. Poor guy (named Tails).Arrived super fast, but broken. Requested a replacement and got it quickly too. Was not vendors fault. Box was damage, I assume it broked during transportation.Perfect size for my tank, very happy with purchaseI have been looking into breaking down my bettas 5 gallon tank, as maintaining two tanks is getting a little too hard for me now. I have a 20 gallon long (30inx12inx12in) I wanted to move him into, but the tetras I have in there are a bit too aggressive.The 10g divider fits my tank perfectly but only with about 2 inches of gravel on the bottom. Without the substrate it would be too short.The divider comes right up to the lip of the aquarium and digs a little bit into the gravel. So my bottom dwellers can't get under and my jumpers can't get over. It looks really nice, is really clear, and the holes are nice and big so there is plenty of water flow.It's best to put the suction cups on before screwing them to the divider, as I broke one. Thankfully it did come with extras so that is a plus.This was a perfect fit for my tanknbut always measure your tank and take into consideration any gravel in the tank.Everyone said it gets cloudy. That's kind of why we bought ours. So the two bettas can't see each other. It didn't really fit our 10 gal. I was scared to cut it because other reviews and brands said the item broke. So we just angled it in our tank. Once I add the plants back in the tank I don't think I will notice it. Works for our needs.Overall Item is alright. The panels are thick and feel sturdy, but the brackets are thin and kinda cheap. I broke 3 just trying to get the suction cups installed.This divider worked perfectly. I did have to do a little sanding to get it perfectly fitted for my take. But after the work it looks perfect and my Betta's are safe from each other. I didn't even need the sanction cups. I sanded it just right and I love how sturdy and transparent it is.The corners to attach to the divider and the suction cups break super easily. Before putting inside my tank 1/2 the corners were already snapped off.Extremely difficult to clean.Said would fit my tank according to measurements but it was too tall needing to be melted to cut it shorter which was hard enough to do just to remove it from my tank a month later because it didn’t work well, and while takiNg it out, the remaining corners for the suction cups broke off.The little screws and bolts that came with it are also clear, which makes assembly quite difficult as they are TINY and clear so you place one down to use after and you can no longer find it.Overall horrible.Working like a darn to keep the big guys off some plants I'm trying to get started in there. Quick and easy to put together. It's thick enough to need a good saw to cut so make sure to measure your tank first and you won't be disappointed!This is a nearly perfect fit for my 65G tank. Getting a separator for a new fish with fin damage was needed so she wouldn’t stress out and die. I am happy with how it looks. I’ve seen in other ppls posts about water flow, I feel it does a fair enough job. It’s easy to clean and looks decent enough.this Divider is 1/4 inch to big, good thing I have a fully functioning wood working shop ! it'll take 5 minutes to sand it to the correct size..Buyer beware!Matériaux solides et livraison rapide. Merci!