Aquaclear 70 with 20 impeller, who done it?
Hi guys looking for opinions on using aquaclear 70 with lower impeller such as 20, 30, or 50. I talked to DogFish and he said Hagen recommend only using two grades down on the impeller.
I just wanted to know if anyone ever done AC70 with a AC 20 impeller and what is your opion on it. Btw I'm trying it for a 10 gallon shrimp tank only. The big bio filter on the AC70 would be great to hold media for shrimp.