New tank algae....what to expect

[Aquattro]

Marnie, it will cycle thru the available nutrients as they come and go. No way to tell a time frame. Shouldn't be too long though. Make sure you stick to a decent water change schedule using RO water, feed sparingly, and let the crew do their thing. Do you have any turbo snails? They eat lots.
Also, keep your skimmer clean.