No do not remove any rock i mean literally grab the algae with you fingers4 months now I only have a 40 gallon and no skimmer yet after this corona I was gonna buy one but I already have some coral in there.Also when you meant remove what you can by hand you must mean live rock.If so what should I do with the live rock
I would add another 5 to 10 snails and 5 to 10 hermit crabs. And atleast 1 emerald crabAnd also I already have two snails in there already