04-26-2012, 12:31 PM
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Originally Posted by Castiel
I've tried doing a little bit of research on T5. It looks like it might be what I'm looking in terms of light intensity. However I've only been able to find blue-ish T5. I need a white. I think I might try using LED's instead or a few T8's
Mosses are low-moderate light requirement plants. But I would get a proper aquarium light fixture over your tank, it will provide better light with some scope to expand the plants, and be nicer to look at.
On your tank you could go with incandescent light; fixture will be less expensive than fluorescent tube, and you can use the Compact Fluorescent bulbs (CFL) which in "daylight" provide very good plant light. But over a 47g, 3-foot tank, I would do fluorescent tube.
And this gives you some options. A single T8 tube in 30 inches will suffice for mosses and many other plants. A single T5 will provide half as much light again, roughly. The photo below is my 33g which is 3 feet, and it has a single T8 30-inch tube. Java Moss grows well, along with pygmy chain sword and Java Fern, and I have floating plants (essential for most fish).
The less light, the better on fish and less change of algae issues.