I have a 130W PC fixture made by corallife on my 20G tank. That's a 65W Actinic and a 65W 10K bulb. My current coral collection in that tank includes:
1. Green Button Polyps
2. Orange Zoanthids (Small)
3. Hammer Coral
4. Kenya Tree
5. Xenia
6. Finger Leather
7. Green Star Polyps
8. Ricordea
All corals are not only surviving well. Several are growing very nicely.
* The Kenya tree tripled in size over the last month (ok, not hard for Kenya Tree) and I traded the majority of the colony in at a LFS for credit.
* The Finger Leather started as 2 frags that were about 1/4 inch around and 3/4" long. Now the whole colony has COUNTLESS branches and is about the size of a baseball when fulling inflated. It has probably (literally) multiplied in size by a factor of 100. At least. That took place over the course of around 6 months.
* The Xenia has overall grown pretty slowly. However, I have noticed a big increase in it's growth recently. I think it is finely starting to really settle in and be happy. It has been in there the least amount of time of all corals in the tank.
* The hammer coral started with 2 small heads. They have added much mass to themselves and one of the heads is splitting. It is very nice.
* The Ricordea has doubled in size since it has been in there for the past several months. It may actually be newer then the Xenia.
* The green star polyps, as they will do, have spread off their initial rock (which was about a 1 inch inch diameter circle-ish shape) and onto the rock they are sitting on. The size of that colony has pretty much doubled.
Anyhow, I probably am breaking all the rules of coral species density. But it is doing well and is very pretty.
Now, yesterday I actually brought that tank home from my office and put it in my bedroom as I am starting a new job in a week. Everything made the transition fine. Hopefully the growth that things were experiencing does not slow down too much due to the trauma of the move.
Anyhow, now that it is at home and my other tank (55g) seems to be almost overflowing with corals, I may actually stick a small Acropora nana colony up on top of the rocks near the lights and see how it does.... Sort of as an experiment. I will at least give the tank a couple of days to a week to stabilize, and maybe wait longer.
Anyhow, there is a long-winded answer to a simple question...
