I have 105 gal. reef tank with all parameters being normal. I keep getting cyano algae in the sand on one side of my tank.
I have two MH's over this tank, a 400w 10k on one side and 175 10k blueline bulb on the other. The blueline side is where it keeps coming back. It has been in use for about 9 months. The algae seems to recede at night and come back in the day and I can't figure out if it's the bulb or the ph changes that is causing it. The algae doesn't appear on the other side of my tank. I also have good current throughout.
Any thoughts appreciated.
I have two MH's over this tank, a 400w 10k on one side and 175 10k blueline bulb on the other. The blueline side is where it keeps coming back. It has been in use for about 9 months. The algae seems to recede at night and come back in the day and I can't figure out if it's the bulb or the ph changes that is causing it. The algae doesn't appear on the other side of my tank. I also have good current throughout.
Any thoughts appreciated.
