I have a Fluval Venezia 50 gallon tank, I set it up just over a month ago, the pet store told me I can add fish in 48 hours. 2 days later I bought 2 iridescent sharks, 2 Bala Sharks, 1 red tail shark, 3 tiger barbs, 3 flame gouramis, 2 dwarf gouramis, 2 honey gouramis and a pleco. In the 1st 2...