20 Gallon Long Aquarium Tank Divider. ONLY Compatible with USA Tank Sizes Listed Below.

Really easy to assemble and the quality is good. It fit perfect in my aqueon 20 gal long. I wanted a black divider so my two bettas wouldn't see each other and get stressed out. It's been wonderful. It's a little wobbly sometimes when you're cleaning but as long as you're extra careful it's sturdy enough. For those with snails: this will fit all the way to the top of the lid if your gravel is about 1-2 inches thick. So you don't have to worry about bettas jumping or snails escaping to other sides. Mine sits high enough thanks to my deeper gravel and is flush with the glass canopy lid so no snails escaping!

Works great for my albimarginata tank! Everyone is staying on their side. Love the material of the divider.

Works great. Sturdy. Easy to install.

Took almost a week longer then expected to arrive. The divider is definitely sturdy and fit right into my 20g long easily enough. However, I want to preface this by saying I think most dividers would have this issue, there is about an inch or maybe half an inch gap between the top of the divider and my flat glass lid.Since the point, like I’m sure most betta owners, was to split my tank for two male bettas (was trying to cut down on tanks. This kind of sucked. I woke up in the morning and on male had squeezed himself (idk how they do this) between the lid and the top of the divider and managed his way to the other side. I’ve removed some of the water to see if that’s makes a difference. But to be fair, I don’t think any divider would be any better in this regard. 🤷‍♀️

I had the pleasure of testing these dividers when they were in development (2 years ago) and they are by far one of the best out there. They are very sturdy and limit the amount the bettas see each other (which reduces stress but promotes flaring).

This is a great divider if you use silicone along the edges, but that means it will be permanently in that place. I used it without the silicone and my betta fish kept squeezing through. A danio also squeezed through from the other side. Some fin nipping occurred after that and I was frantically trying to net the fish to place back on their respective sides. And then they did it again. Just a huge mess and caused a lot of stress to my fish. I will say it is a sturdy piece and if you are willing to use silicone to secure it and fill the small gaps on the sides it would be great.

I was glad that I purchased this instead of trying to make something. They worked very well and te videos were easy to understand.