Brown stuff on sand

[jasondon]

Hi Guys. Just curious if there is a difference between more coarse sand, and finer sand in keeping it clean? I have fairly fine sand in my 20G, and I find it fairly difficult to keep clean. I do not have any snails right now, but once my 60 is up and going I will probably need some. Any thoughts or preferences?

Also curious if going from my current PC lighting to T5HO will have any effect on keeping cyano/algae down?

Thanks in advance!