Yes do smaller water changes, but you can do them daily. I would get the original tank down to 20ppm and the tank at your house down to 10ppm.
I would think the mulm is, by and large, a source of the nitrates ... and a rinse out would not be a problem as far as a crash goes, given that the rest of the tank is likely covered in beneficial bacteria.Belair62 said:Thanks. This is going to take a while. I am guessing the remaining canister filter is loaded with mulm like the one I brought over to start my cycle. Thought about giving it a rinse out but worried about a crash. Best to slow it down here I suppose. Thanks for the help so far. Thought this would go a bit smoother.