[quote="
I'm running CO2 24 hours/7 days a week, i do have a circulation pump (Hydor Koralia 900 - 900 l/h) and there is visual movement of water flow in my plants. OK I will increase CO2 but I will do it slowly, I don't want to stress or hurt my fish.
I will make small changes and I will wait
sorry about my English or any vocabulary mistakes.[/quote]
Not many people run the C02 24 hours a day as the plants do not require the gas durring the lights off period.
This is not causing your algae problem but you are waisting the gas, better to run it on a timer.
Set the C02 to come on two hours before the lights come on & to switch off one hour before the light go off.