I’ll be honest I didn’t really realize how much work they did. In my other tank I have maybe 20 snails. No crabs or anything and it’s a 220g. No algae but it’s also 8 years old. Not having a cleanup crew in it yet was probably an oversight lol.You have NO clean up crew? That is certainly a problem. They have a harder time when the algae gets long... probably need an urchin, crabs, bigger snails (turbo?) at this point.
as for length it comes right off with a tooth brush. I’ll just brush all the rocks down and do a water change. Should be manageable for the cleanup crew then. It’s definitely long right now.

probably just fertilizing them at this point. Tangs get wayyy too much credit.




