I have another LR question. I recently got some LR from LR.com and checked the levels last night and the ammonia was 3. My question is I placed a towel over the top of the rubber maid bucket to keep the smell down the first night. The towel dipped into the water for less than a minute but I wanted to know if this will harm the water/rock being that it was a towel that had been washed in the past(of course)?? I doubt it would but I did do a 50% water change just to make sure and then did another one the next day. It smelled really bad even when I took it out of the box…Nice looking but VERY stinky!