I need to grow out ~ 30 Cyp fry (spit in last 3 days) and ~ 100 Bristlenose fry. Space limited so I plan to put them together in a large tank (55? 40 breeder? not yet sure). Any reason this won't be a good idea? Will have 2 HOBs (Aqueon 75, each 400 gph) with protective foam over intakes. I figure mid dwellers won't care about the bottom dwellers, and vice versa. Everybody gets the same tap water plus Tang buffers.