Gravel vac......don't stir up substrate? I'm confused!
I've been doing lots of research on getting rid of BBA algae, it's under control but I am really working hard at keeping it that way.....I do a 50% water change each week on my 75 gallon which is only 4 months old. I have BDBS substrate.
My question: I see posts that say don't stir up the substrate when doing a water change........and others that say be sure to gravel vac as much as possible during each water change. Isn't this contradictory? Which advice should I follow? I gravel vac but I don't have too much detritus. Should I stop using the gravel vac?