Who Gives A Fish Forums

I'd also recommend adding a bacterial starter like Tetra SafeStart or Dr. Tim's. It's not instant, but it can shave a week or two off the cycle. Just keep testing the water every few days to track progress.

Thanks, everyone. I'll start dosing to get my magnesium up to 1300 ppm and see how it goes. Appreciate the advice!

Yo, reefcare, you're spot on about magnesium being key. For SPS, you wanna keep it between 1250 and 1350 ppm. Anything lower and they'll start looking sketchy. I run mine at 1300, and my Acros are popping. What's your alk and calcium at?


Thanks for the tip. My alk is at 8 dKH, and calcium is ...

I've been noticing my SPS corals aren't growing as fast as they should. My magnesium levels are around 1200 ppm, but I've heard they need to be higher. What's the ideal range for them to thrive?

Anubias are low-maintenance, but high pH can limit nutrient uptake. Try adding a liquid carbon supplement if you're not already. Also, what's your filter type? Good flow helps distribute nutrients.