Anyone tried these before?

[Aquattro]

Originally Posted by nanomano

lol yeah I figured out I was looking at the wrong page after reading what I wrote. I have decided to do a t5/halide combo light

How will you handle the heat on a 20g using a halide? Unless you're set on going hardcore SPS, I'd stick to a pure T5 fixture. I use a single MH over my 50g, because I had it lying around, but it adds a lot of heat and is a bit much for the shrooms and zoos I keep in there.