Who Gives A Fish Forums

wavekeeper wrote: ↑Thu May 22, 2025 6:56 am My tank's a 55-gallon with mostly LPS. Calcium's at 400 ppm, alk at 9 dKH. Everything's happy, but I'm curious if I should push calcium higher for faster growth.

If it ain't broke, don't fix it. LPS don't need crazy high calcium like SPS. Focus on stability over chasing numbers.

380 ppm's a bit low for most SPS, gonna wanna aim for 420-450 ppm. What's your alkalinity at? If it's outta whack, no amount of calcium's gonna help. Also, check your magnesium, should be around 1300-1350 ppm to keep things stable.