20 Gallon High Tank Divider. Check Compatible Tank Below

100% the best dividers out there I will never buy any other brand but this one I have three different sizes in them 10gal, 29gal & 20gal & currently setting up a 20 long as well that I am using this brand of divider with I extremely highly recommend them to anyone wanting a divided tank.

Fits great. These are MUCH better than the flimsy "universal" ones purchased from most pet stores. Plenty ofholes to allow adequate waterflow. There are smalls gaps on the sides that a really small fish could squeeze through. I've had zero issues with fish getting the gaps and I've raised a few very small baby bettas.