I have a cycled 5gal Fluval Spec V with a couple pounds of rock and sand in it that I am considering using for a copepod/phyto/macro tank to grow out beneficials that I can then harvest and add to my display tank (Fluval Evo 13.5). I am planning to order some pods, Tommy's Phyto, and some chaeto and red ogo macro algae. Aside from the usual water changes and top off, is there anything else I should consider? Will I have to feed this tank aside from phyto additions? Should I consider some snails for additional cleanup? Do I need to worry about alkalinity and calcium the same way that I do with my display tank?