I have a 7g nano running for 2 months now and got some cyano. A couple of reefer friends suggested I should siphon the sand when changing water - but I'm unsure on how to do it.
First, I'm using just a plain hose to transfer water and my second trouble is that it seems that I would simply siphon most of the sand out. It's such a small tank and there is not much sand at the bottom - I feel if I start siphoning that I would simply vacuum all the sand out.
Is there a particular technique in doing this?
Edited by acabgd, 20 March 2012 - 01:26 AM.