I have just recently changed my lighting from a standard 20 watt bulb to a 2x65 watt coralife fixture. I havent had any algea problems for a good year now, but a brown (looks like a diatom outbreak) algea is now covering everything! I also recently moved the rocks around last week, stirring up the sand and added one damsel yesterday to a tank that has been stockless for a while. Mind you that this tank has been up and running for two years. Any thoughts?
Water parameters as of now.
(high i know, it gone up from last week. Was about 10-20)
Nitrite: 0 ppm
Alkalinity: 300 ppm
Ammonia: 0-.25 ppm
Any way i can bring Nitrate down, and how big of water changes should i do a day since my water its reading 0 ppm