L LeoKhomutov Feeder Fish MFK Member Sep 22, 2008 73 0 6 illinois May 21, 2009 #11 When I changed my gravel to sand I took out and saved about half of the water out of the tank. That made the process a lot easier. Having all that "cycled" water plus your filter media should really help in avoiding the bio-nasties. Best of luck.
When I changed my gravel to sand I took out and saved about half of the water out of the tank. That made the process a lot easier. Having all that "cycled" water plus your filter media should really help in avoiding the bio-nasties. Best of luck.