algae and light distance

[Ilovefishies]

I have algae in my tank. However, the algae is growing mostly on part of my java moss that I have attached to a large piece of driftwood in my tank. It looks like hair algae. Its very long and stringy like hair. The algae seems to grow on the moss on the wood that is closest to the light because it is a tall piece of wood. The parts furthest from the light dont really have algae. So, my ph is about 7. I have about 5 bubbles per second of co2 and I dont add any fertilizers or anything and I dont have any nitrates really. I have a few mollies in this 20 gallon long tank. Anyone know why Im having this problem? Thank you for your help.

[rocketshrimp]

Something is wrong.

You have a 2ft to 3ft tank...runnin 5 bubbles per sec and your ph is 7?

5 bubbles per sec is alot. I should expect the ph to be 6. something. What is your wattage?

[kayser78]

20 gallon is about 2 feet or smaller. i suspect soemthing wrong with your ph test kit. i have hair algae on my moss before too. i put in 2 or 3 saes and it become fine after that.

[goh]

I have algae in my tank. However, the algae is growing mostly on part of my java moss that I have attached to a large piece of driftwood in my tank. It looks like hair algae. Its very long and stringy like hair. The algae seems to grow on the moss on the wood that is closest to the light because it is a tall piece of wood. The parts furthest from the light dont really have algae. So, my ph is about 7. I have about 5 bubbles per second of co2 and I dont add any fertilizers or anything and I dont have any nitrates really. I have a few mollies in this 20 gallon long tank. Anyone know why Im having this problem? Thank you for your help.

You did not provide sufficient information. What is tank size, lighting, plants in the tank, etc.
Since you are pumping quite a lot of CO2, is your lighting quite high? If that is true and you are not dosing any fertilizers, algae is bound to appear.
Please provide more details of your tank so we can advise better.