fishtank

I'm wanting to stock my 30gallon aquarium. I'm thinking to schools would be okay. I'm thinking of a school of 5kuhli loach. I have read if you don't keep at least 5 they will always be hiding. Then my second school I want Bala shark of 5. I have read if you don't keep them in a school that they...

So I have three 40 gallon breeder tanks and currently I use one for my Savannah monitor. I want to make his environment bigger but it's extremely hard to find a terrirum that meets his needs. I want to join two of the 40 gallon tanks together but not sure how. They won't be holding water...