Corals Dying

[andsoitgoes]

Not to go backwards, but if the only thing you've changed is your lights and the corals were doing fine before that change, that's the one big thing that strikes me as a concern. How did you acclimate to the light change?

Going from PC to MH offers an increase in PAR, but if you switch from PC to MH without any adjustment, it can result in a wide range of problems. Maybe the SPS are using up more CA to grow faster in the higher provision of light, same with alk/etc. Maybe it's a combo?