are you carbon dosing or adding any bottle bacteria? I notice even with socks when I do they seem to need changing more often.So I ended up recently removing the filter roller from my system. No matter what I do I can not get more than 2 weeks out of a roll, new or washed (yes I rewash the dirty fleece and reroll it back onto cardboard tubes). The 30 seconds every other day changing out socks is much less of a hassle and time consuming than changing out the fleece every two weeks which takes 20-30 minutes each time. Plus I honestly feel like the roller was stripping needed nutrients from my water. I had to begin dosing nitrate as they dropped to 0.5 and ended up with dinos and now I’m starting that battle!