I have a 10 gallon tank with 2 otto catfish, 2 male double red apistogrammas, and 2 female apistos. I didnt realize that apistos needed 30 plus gallons of water because they were so tiny when i got them but now they are outgrowing the tank... i dont have much room to work with but i would like to have a planted tank for them to breed in. If i take the ottos out can i get away with putting them in a 20 gallon long if i densely plant the tank? i dont think i can fit a 30 gallon in the spot that i have for them... ugh