Recently we have had our powerheads break and was forced to take them out. We'll while waiting to purchase new ones, we have developed a LITTLE bit of a cyano build up. Just a light dusting. No slime. The tank is only 1 month old and just finishing cycle. My question is, for a 75g tank, is 2 1600gph powerheads sufficient enough? They both have 2 heads that point in opposite directions. So it would be 4 blowers total. Would that be sufficient or should I do 2 3200gph? Idk what our old ones were. They were given with the tank. Tia
