Careful though, they have been known to be so powerful that they will suck sand even through a prefilter. If this is the case you may have to throw it in the dump and go with a Whisper filter instead
Careful though, they have been known to be so powerful that they will suck sand even through a prefilter. If this is the case you may have to throw it in the dump and go with a Whisper filter instead
Take it apart and clean the impeller and casing thoroughly. 3 months is long enough to let it go...
then
put the media back in it and you're good to go for another 3 months...
Oh and tell us that you do not have carbon in there, just bio-max and foam...right??!?