Cyano :(

[Aquattro]

Originally Posted by martinmcnally

Do you turn skimmer and carbon off for 24 hours?

skimmer stays on, but tilt the cup so it overflows without making a mess. No carbon until you want it gone. I usually leave it 2 or 3 days, then a large water change and carbon. Skimmer takes some tweaking until it's fully removed.