I'm new to aquariums. I have a 150 gallon with 3 straight fin and 3 viel tail angelfish. 1 bala shark 1 dwarf gaourami 1 platy. 2 pecostamos. My question is how much filtration do I need for this size tank. I have filstar for a 175 gallon tank and a fluval c4 for 70 gallons. I've heard that you need at lest twice the size filtration for a tank. I'm concerned because I want to add 3 discus fish this weekend and then another 2 discus in the future. I've heard that the tank needs to be super clean to have discus. Please help!
