Curing Rock

[Werbo]

Bought some uncured rock from J&L. Interested in knowing minut details that I may not know about for curing rock.
I scubbed the rock by hand removing any obvious die off. So far I have the 40 lbs of live rock in a 20 gallon aquarium with salt water made from de-chlorinated tap water (not RO/DI). I have 2 Hagan 802s circulating the water that is at 78 degrees. I again lightly scrubbed the rock to remove any obvious die off and after one week I changed 100% of the the water. I am now at the end of my second week and not sure about nitrites, nitrates, & ammonia levels but imagine they are still very high and will check this weekend.

I was planning on doing a large water change using RO/DI water for the last week once the initial large scale die off occurred and the nitrates and ammonia begin to level off.

Very little light in the room as it is in a downstairs bathroom (no lid or light on the aquarium)

Anything else I should be doing?? Am I doing anything drasticlly wrong.