CO2 level and plant mass?
We know that we will increase the nutrient dosing as the plant mass increases. Since the CO2 is the main source of plant nutrient, do I need to also increase the CO2 injection rate?
I recently have some green hair algae developing on the lower part (or old) of my rotala leaves. Hair algae mostly cause by insufficient of CO2 or imbalance of nutrients.
When I first started the tank, my CO2 bubble rate was 1 bubble /second. The pH reading was 6.6 and tank water is 4kdH, so that give me about 30 ppm of CO2. I can confirmed that with my drop checker turned to light green. No or minimum of algae.
Now my plant mass is almost double. With the same CO2 bubble rate at 1 /second, the pH is almost no change after 6 hours, and reads 6.9 (tape water is 7). I don't know if I have the CO2 deficiency or the plant pearling drive off the CO2 during the photo period. Algae starts to invade my tank.
Should I increase the CO2 bubble rate? I have amano and red cherry shrimps in the tank.