So I have a 55g tank and I am curing my LR and cycling my tank at the same time. I have two heaters and a powerhead on for 3 weeks now. I bought my 90lbs of LR online. My nitrates and nitrite levels are so high I can't read them. Is that good? I do about 2 water changes of 50% every week. I recently added live sand to my tank a few days ago and now there is a thin layer of light brown sludge on my tank. How can I get rid of this? Also my tank water is a light green color when my lights are turned off, any solution to this? Any input helps. Thanks.