Looking for a good tank divider for 12g long
I have a 12 gallon long Dr.Aqua aquarium. I'm looking to divide it into 4/5 mini tanks using dividers for shrimp (neocaridina). For the life of me, I can't find/think of a suitable solution that has mesh small enough to not let babies get through, and at the same time will allow adequate filtration. I use a cannister filter so the filtration goes from one side to the other of the tank. I'm also in Canada so I may be limited in products.
Looking for suggestions please!