Pre filter on my return pump - yeah or ney?

[FlyboySMB]

I have an Ehiem 1200 for a return pump & I have a foam pre-filter on the intake for the usual reasons. I clean this once a week, Is this a good idea or bad, I should say that I am battling hair algae.


Thanks,
Steve

 

[ACBlinky]

I use a coarse foam pre-filter on my Mag 9.5 to stop any chaeto or caulerpa getting into the pump. As long as you're rinsing it out weekly it's not an issue.

 

[phnxfrfx1776]

I had a pre filter on my mag 9 took it off for one day, and a snail crawls right in and breaks the impeller. Will never take it off again for extended period of time

 

[johntran216]

I wouldn't run it completely open for that reason.. i have a plastic one w/ little slits on my mag7, but i don't like the sponges. extra maintenance lol