Is it normal for them to eventually start moving slower? there constiantly moving but slower then when i first bought them i have 2 penguin 350's
aclockworkorange;4450122; said:I've always had problems with bio-wheel filters... switched to aquaclears and haven't looked back.
fishbum;4450236; said:They all slow down. As long as they stay wet,and are spinning,even if it is slow,it's fine.