“Large capacity- far more than the fluval 307 it replaced on my 200l. I was aware of watching the o rings - to make sure they are seated - no issues but ive not cleaned the media yet. Flow is adjustable much like the 307 and is marked on the unit. The inlet tube which comes in a few parts is 'ok' but you have to make sure they are pushed in well. I added a black mesh bag to the strainer as the holes are always too big (did similar on the 307). Works well and it's silent.”
“Very quiet, hardly noticeable not like years ago when you had a loud humming. Water in tank is crystal clear, easy to clean sponge. Didn't prime easily so i just filled the pipe manually and set it away.”