first timer MH question.

[andsoitgoes]

Just note that the fact it's 20k is going to reduce its "potential" in how well it would feed shallow-reef stuff like clams, sps, etc. Also - 20k can be notoriously dark and bluish, you're probably going to want to look at something that also has an ability to add PC bulbs to supplement with 10K in order to bring out the colors a bit - that's what I've seen with 20K bulbs anyway...