Who Gives A Fish Forums

Thanks for the tips. I'm using Instant Ocean Reef Crystals. Alkalinity's at 8 dKH, magnesium is 1250 ppm. Guess I'll start with raising Mg first.

My corals aren't growing as fast as they used to. I've been testing calcium levels, and they're sitting around 380 ppm. Tank's a 75-gallon mixed reef with T5 lighting, running a protein skimmer. Should I bump it up to 420 ppm, or is there something else I'm missing?

Thanks, all! Gonna adjust the light to 7 hours, start Flourish, and check the rhizomes. Appreciate the help.

My Anubias aren't growing well in my 20-gallon tank. I've got a basic LED light, sand substrate, and do weekly water changes. Any tips to get them thriving?