[cowfish]

how often should clean out an ehim wet dry with a pre filter on the intake

 

[fshfanatic]

hate to state the obvious, but here goes anyway.

As often as it is needed. :icon_smil

 

[cowfish]

but its a wet/dry filter it has no filter pads or foam in it

 

[tropicalfish]

I guess whenever it gets dirty?

 

[fshfanatic]

but its a wet/dry filter it has no filter pads or foam in it

I am familiar with this unit and I would say unless you are running a prefilter which will need to be rinsed, then all you need to worry about is a yearly or bi-yearly media rinse.