Experience with Seachem purigen

[Shilpan]

Hey guys
So my Seachem purigen is still sitting in its bag in the sump and after 8 months it's still basically white. The only colour change is the bag has some coralline growing on it. I think it maybe still working as between it and my refugium my nitrates are 5-10ppm at most, 0-5 after a water change.

My question is anyone else have this happen? Shouldn't it be turning brown? How long does yours last?

 

[2quills]

Doesn't sound like it's removing much if it's still white after all this time.

I've never used it as I've always heard mixed results. But even running carbon I have to be careful since I notice a significant drop in skimmer production whenever I do.

By this point I suspect your purigen is probably coated with bacteria and not really doing what it was designed to do.