using GH down. The temperature has settled at 82 during the day. We put her to sleep at night, but can estimate the temp being 77-79. The ppm has settled down now, but the ph remains unpredictable. Adjusting couple, to few, times a day now. Before the light exchange, we were adjusting at once to twice within a seven day period. It just seems so odd that the ph would adjust so much. She's doing great, but we are hostages within the home to her rule! She demands constant watch and attention with the water being so unpredictable.