As for food, I toss Formula 1 Pellets in a couple times a day, as well as feed Marine Cusine, gut-loaded brine or mysis shrimp, depending on what I feel like at that moment.
It very well could be lights. I'm running two RapidLED Onyx Fixtures, and yeah, that is a lot of light, especially given that the tank is so shallow (12")
is a bit low (7.2) relative to where calcium is (420), -- mag is around 1340, but it has always been that way, and no amount of dosing keeps it up. I've had very good growth and acceptable color to this point, so I haven't bothered trying to push it up. Also, in my (limited) experience, SPS
doesn't react too well in a nutrient-poor environment where alk
is much higher than 7 - 8.2 or so.
I'm going to let the tank coast for a bit, go a couple weeks without changing water, bump up the height of the LEDs and see what happens.
Need to bite the bullet and order the blasted PAR meter, it would help clear up so many things.