Which side is it?

[t4zalews]

I have two 250w running. A XM 20k and a Radium. Which side is the Radium?

[Nanook]

Hard to tell on such a small tank. With only 3 feet of viewing area and two metal halide bulbs you are definitely on the overkill side and asking which side is which bulb is virtually impossible. As long as you are happy is the main thing:)

[t4zalews]

I used to run a 400w in a lumenarc over it

[DLANDINO]

radium left?