Oh, now I see! Is the gravel "pea size" (1/4 inch-ish) or smaller?
If you don't have fish in there yet, cycle the tank with ammonia to 1 or 2 ppm. THEN add fish if your tank & bacteria can deal with it in 24 hours...That's what cycled means! But you still have to check your parameters daily for a while just to be sure.
If you don't have fish in there yet, cycle the tank with ammonia to 1 or 2 ppm. THEN add fish if your tank & bacteria can deal with it in 24 hours...That's what cycled means! But you still have to check your parameters daily for a while just to be sure.