CP1 Circulation Pump, up to 15 US Gal / 60 L - Fluval USA
So I've neglected cleaning the behind spot/filter and pump areas (fluval flex 15g). I tried scraping and using a siphon to get some of it, but there is a lot left. Is
Fluval 07 Filter Cleaning & Maintenance How To | 107 207 307 407 - YouTube