Filter Cleaning Frequency

How is your flow?

I have numerous Eheims and dont clean mine till I notice my flow slowing down. Usually, 4 times a yr

unless you see a pretty large change in your flow, or dont feel the filter is doing its job well there really is no reason to mess with things. i have a rena xp3 on a 55g and have cleaned it 2x in a year and 3 months, and everything is great.

I do notice a reduction in flow.
It might be due to so much diatom (brown algae) I have experienced.
It seems to me like a lot but that may be because it's my tank and a new one.

thanks for the reply

raul

I also clean mine when i noticed the flow slowing down, but this usually occurs every 2-3 months. I have an XP3 and an Eheim 2128 on my 125 gallon.

My smaller tanks go through longer phases, probably about 3-4 months. I would have to think it's due to the detritus. I feed more frequently and in bigger quantities in my 125 gallon.

I have found the frequency of filter cleaning for me is highly dependent on how much fish food they eat. I just cleaned 2 Fluvals that lasted over a year, the rest of my Fluvals usually go 4 or 5 months. My eheims get cleaned more frequently, rarely get one to last 4 months. Flow gets kinda tricky sometimes, after a while you get a feel for the filter and how it performs for a certain tank. I would think two 2217s would last 2 or 3 months at least on a 125, again depending on how much fish food they eat and of course the bio load.......DC