tom obrecht
Active member
I currently run 4 6105's on my display and have had issues with locking up impellers. They operate normally until they just stop as if they are calcified so I remove the stopped PH, soak in vinegar overnight, reassemble and nothing! I have tried a different motorblock assembly and still nothing. I resoak, clean again...still no luck. This has happened 2 times now! Now I'm down 2 powerheads! They are the newer models (with attached controller) so they are not ancient. Is this an impeller issue, user error or something else? Any help would be appreciated!