Tested my Potassium using an ELOS kit. Was way low around 200ppm. I have never had a problem with bluing in my tank. Anyway bought some Warner Marine Potassium and raised it to 300 over 5 days. I noticed an outbreak of Cyano. Any relation to new dosing of Potassium? And can raising your Potassium from 200 to 400 in 2 days cause problems with corals or live stock?
Thanks
Thanks



