Here's todays water testing from my live rock curing tank. pH 8.6 Am 1.0 N02 .2 N03 10 Alk 3.4 With N03, I did the low range side reading and to me it doesn't seem right why that one is so much higher than the rest. I understand it to an extent, but should I be worried about it? Once more growth occurs, will it eventually lower? I did have a low powered light on the tank for a week, but brown stringy algae started to grow, so I haven't had the lights on since.