hair algae

[landshark]

I am having problems with hair algae in a ten gallon tank. Water quality is good, but ph seems to really fluctuate. Running 2 months. Using Chem Pure Elite, but Dark green algae continues to grow, some in clumps 1 to 2 inches in height.

[bassman]

What type of lights are you running and how long each day?

[digital-audiophile]

What is your water source? Tap, RO/DI?

[michika]

Tell me about your rocks.

[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.

[michika]

I'm guessing rocks have phosphates/nitrates in them and they are feeding your GHA outbreak. Manually pruning seemed to work best for me, it took about 6 months for everything to leech out of the rocks.

[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.