I currently have a 20g mixed reef and have abysmally poor growth rates on most of my LPS
corals. My Duncan looks great and healthy but hasn't grown a new head beyond it's first since september. My torch and frogspawn that were bought at approximately the same time are in the same boat with the duncan.
I first thought it was my alk
, calc, and mag (which it was) but now that I have those levels under control the growth rate is still really poor which is making me think about other things that could be the cause.
My parameters hover around:
Nitrate - 0
Phosphate - 0
Calcium - 400ish
Magnesium - 1200
Salinity - 1.025
10g refugium w/ grape caulerpa and chaeto
no reactors or skimmer
2x Occ clowns
Using an API test kit I haven't had a single positive reading for either nitrate or phosphate in nearly a year. However I recently bought a salifert phosphate kit and it tested at 0.0. The other readings are taken with a red sea test kit.
I feed 4 - 5 times a week with frozen mysis and twice a week with some nori for the blenny.
Would you think that it's my low nutrients that's the cause or should I look at other things?