i have my xp4 currently stuffed as full as it can possibly be with the media i had in there before, as well as the media from the xp2 canister (not long ago had issues with the xp4 motor housing/hose assembly, and had to do some filter part switcheroos). it's to the point where i have to push the baskets down good to get them to line up with each other, lol. no problem with flow at all on my xp4, even with the xp2 motor on it, and i did the filter parts switcheroo over a month ago if i recall correctly. big messy oscar and paratilapia polleni in the tank too (well, polleni is currently in hospital tank, but that's only been the past few days).
with either of my xp's, i've never noticed any dramatic/sudden flow slow down or clogging to the point where they don't run properly. i 'might' clean them out once a month, lol.
with either of my xp's, i've never noticed any dramatic/sudden flow slow down or clogging to the point where they don't run properly. i 'might' clean them out once a month, lol.