Who Gives A Fish Forums

I use a measuring cup with mL markings for my 75-gallon. It's not perfect, but it's close enough. Prime's pretty concentrated, so a little variance won't hurt.

I'm new too, but my fish seems happy. How do you know if they're stressed? Mine just kinda chills near the bottom sometimes.

I have the same issue. My siphon stops a lot. Maybe it's the brand?

I'm new to SPS, but my LFS said flow is key. I have two MP40s on my 120-gallon, and my Acros are coloring up nicely. Maybe add another powerhead? Also, what's your photoperiod? Too much light can bleach them.