Purging sand

[Slyguy00]

Originally Posted by Leah

I always siphon my sand whenever I do a water change. I like my sand bed white.

+1. I always syphon my sand and keep it white. Usually have no issues at all. Except the last time i did it. I did an extra good syphoning and it appears to have disrupted something because i have a thin brown layer forming on sand. Not sure why though. Perhaps started a mini cycle by disrupting to much at once?

[FishyFishy!]

Hey adam, this is a cool read on sand. It's a long one, but it does a lot with the chemistry aspect of things.

http://www.reef-eden.net/DSBs.htm

My guess on the bubbles would be nitrogen.