Questions on MH 20K and what are the best corals to get?

[xxnonamexx]

I wanted to know what are the best corals to gain the most benefits from 20K MH? Thanks

 

[fishfreek]

I dont know of any studies being done to establish growth rates of different corals under different specitrums nor do I recall hearing of any studies to reflect which corals zooanthelle is more sensitive to 20K vs lets say 10K or actinic 03.

Given the right intensity you can have just about any coral in any specitrum of light as long as it does not have to much in the way of red in the specitrum.

 

[xxnonamexx]

I have zoos and they are doing fine but the star polyps, and I have maroon with green tipped "grass" and it used to come out excellent now with the brighter light it hasn't been the same the water is fine. what else can it be? The polyps seem to peel off the rock, deteriorate?

 

[DragonForce]

I have 10k MH, many people here seem to agree that adding a few retrofit actinic lighting fixtures is neccesary for proper health and growth of your corals. HTH try doing some searches here or pull up some information on google.

This is a nice thread here that has alot of peoples ideas on the different MH temps.

http://www.aquariumadvice.com/viewtopic.php?t=62432&highlight=actinic+supplementing