SPS... Too much green!

[es355lucille]

+1 on the iron. I am not sure what Eisen is ...but if it inhances green it might have a lot of iron in it.

The guide to SPS coral coloration reads like this:

1. Yellows - Nitrate and Phospate needs to be low
2. Greens - Iron - overdose tends to cause darkening of tissues
3. Blues and some Purples - Potassium Iodide
4. Reds/Pinks and some Purples - Potassium (not potassium iodide)
5. Purples - Potassium Iodide/Potassium

This is just a guide that you can find on the internet. "Guide of SPS Coral Coloration".