I currently have a 20 gallon long aquarium with a homemade divider splitting the tank into two sections. Each side has an Aquaclear/Fluval 30. The current water parameters (78 degrees, PH 8.2, Nitrite 0, Nitrate 0, Ammonia 0 or .25 I can't really tell, GH 180, and KH 240). On one side I have...