Changing Substrate - help...

[Myka]

This is a freshwater tank right? There is no live rock in a freshwater tank. There is gravel/sand, but it's not live in the same way as live rock/sand in a saltwater tank.

If you can use a siphon hose to suck out 1/4 of the old sand per week, and replace it each week with 1/4 of the new substrate you can change it out like that without too much stress on the inhabitants.