Filter sponge with driftwood

[cubert]

Before i got a big piece of driftwood for my tank, i would clean out the main sponge once every month or so(if thats not enough or too much please say). I recently cleaned it and noticed it turned all brown due to the wood, i was curious if i should now up the cleaning of the main filter sponge?

[darcy]

I'd imagine its just stained is it not? Can't see the wood making it more dirty unless it was growing that gross white slime that I've seen in other's tanks.

[discgo]

Do you have plecos in that tank?

[cubert]

I would think its just the wood making it discolored, just not sure if i should up the cleaning of the sponge. Yes i have 2 plecos

[discgo]

whenever I have wood and plecos together the prefilter needs to be cleaned more often. I think the plecos "mill" the driftwood.