Not enough co2 ?
I've been searching for the past week to know why some of my plants are losing their lower leaves. They continue to grow quite fast but it's not very nice to look at.
It's a 32gals tank with 68w of light, ferts, tabs and co2. I have noticed people saying that plants losing lower leaves is due to a lack of co2. It is possible in my tank since it's DIY and that my kh level is only 3 according to test kit(by the way is there a way to safely raise it without changing other parameters?). That would give me around 10 ppm of co2 for a ph of 6.9.
Should I add another bottle of co2 to compensate or should I raise the kh?
The parameters for the tank are: ph 6.8 to 7, kh 3, Nitrates 10-20, no nitrites or ammonia, iron 1, phosphate 2ish. I am dosing npk and using flourish plant tabs.