The reason your readings are whacked is because of the Brown Diatom algae. It is consuming part of your trates and trites. Leave the lights off on the tank for the duration of the cycle. Diatoms are plants, plants need light. Hence no light, no algae, and you will get Truely accurate readings. I am following with you, cause im in the same boat with you. My 92 Corner is wrapping up its cycle. If i test with the lights being on a few days, it appears almost normal, but the rocks are red with algae. I keep the lights off for 48 hrs before i test. If you dont have anything in the tank, leave the lights off all the time. My 92 was up and running for 4 months, as a Fish only with sand tank, and i added 85 lbs Dry Lace Rock, and 25ish lbs cured live rock from my other tank. Started a fresh cycle. I only have damsels in there, so im not worried. The amonia never went up, but i got a fresh layer of Diatoms all over the new rocks.