Noticed this stuff in my 45G tank this morning. Any help would be appreciated.
If it helps, the water test I just did shows about 20ppm Nitrate and the slightest bit of Ammonia and 0 Nitrite. I have been using RO water since the beginning.
This is in three different spots in my tank now
Really hard to tell but the spots on the front of the rock are purplish in color
Green spot is new. The red spots are on all my rock and are hard to the touch, I am guessing coralline
If it helps, the water test I just did shows about 20ppm Nitrate and the slightest bit of Ammonia and 0 Nitrite. I have been using RO water since the beginning.
This is in three different spots in my tank now
Really hard to tell but the spots on the front of the rock are purplish in color
Green spot is new. The red spots are on all my rock and are hard to the touch, I am guessing coralline