Planted Tank Guru
Join Date: Jan 2010
Location: Contra Costa CA
I think a good cleaning like you describe will work. Do you have any cleaner critters in your tank that might eat the remaining mold if it tries to come back? Shrimp, Loricariads, snails, other...
If you want to try a quarantine period I would make sure there is plenty of water movement. Mold does not seem to grow very well when the water is moving really well.