So I've had a 29-gallon tank since August and just had a question on my stock. I was wondering if I could bring my zebra danios and albino cories up from 4 each to 8 each. I currently have 1 dwarf gourami, 8 neon tetras, 4 platies, 4 albino cories, 4 zebra danios, 4 siamese algae eaters, and 1...