Mike,
I've never thought about using a desk lamp before. What are they like with regards to the colour spectrum, or with a small tank like this, is it less of a problem.
Squid
Hi Squid,
The colour spectrum of the desk lamp is probably not an ideal colour spectrum and I'm worried that it may encourage algae. I'll probably experiment with it and see, if it doesn't work well then I'll get some other light.
Mike