hair algae

[Myka]

Originally Posted by landshark

I'll try to answer all your questions. Lights are nova extreme,T5HO 18" . Current 10000K and actinic, 38watts total. I've cut back to 6hrs daily. I am using r/o. Rocks are Fiji C/W lots of coraline algae from well established tank.

Do you have a photo of your tank that you could post? What are your water parameters? Ammonia, nitrite, nitrate, pH, temperature, salinity, and phosphate. Calcium, alkalinity, and magnesium if you have kits for those. Those last 3 can be bigger contributors than many people are aware.