badfish
Aquarium Advice Freak
I noticed that my sand bed has been getting neon green and purple underneath the sand, where it meets the glass. The top of the sand is perfectly clean. See pic below, is this a sign of cyano starting, or is it just my tank maturing. Tank has been up for close to six months, i do weekly water changes (10%) with RO water from Walmart (purple cap). I did intial fill up with tap, but thats the only tap that has touched the tank, and had phosphates checked 1-2 months after initial fill, and they were indetectable.
Pic
http://im1.shutterfly.com/procserv/47b5d935b3127cce928639b0dd7900000016108AaOGjdi4Ztq
Thanks,
Jeff
Pic
http://im1.shutterfly.com/procserv/47b5d935b3127cce928639b0dd7900000016108AaOGjdi4Ztq
Thanks,
Jeff