wet

I recently acquired a very tiny protein skimmer for my 15 gallon nano tank and was wondering how often to run it? The collection cup is pretty small so I’d have to empty it every hour or so if I kept it running constantly. I just don’t get how to run this thing 24 hours a day. Or do I even need to?

Hi all, I bought a 250ml bottle of Purigen. It's sort of orange and damp and clumpy. Is this normal for Purigen? I feel like when I bought the last bottle it was more white and more-or-less dry. Thanks!