So I’ve been in this a long time. When I moved into a new house and subsequently a new tank, I fell for the BRS videos and fuge hype on the forums. It does make sense, I get it. But like you, I was adding phosphate and nitrate just so I could grow algae. There’s no problem with that if that what you want to do. It’s just more work than one might realize and in the end, meh. Not for me. Easier to wait a bit, or add fish. If balancing your ph is the goal you’ll need a lot of chaeto, a lot of nutrients, and a lot of light, but most don’t worry abiut this until after they have coral