I would recommend a hydrogen peroxide bath if you're pretty sure its velvet. https://humble.fish/community/index.php?threads/hydrogen-peroxide.21/Ok so I’ve got a 55g setup, ready to take all the dang rock out tonight if I can. Couple of questions.
What’s my first step? Should I do a freshwater dip first or just put them in 55 and slowly start to add copper?
Also I bought a tidal 55 hob filter. Do I run that empty until I’m ready to remove copper?