I have a high light tank but no co2 currently. I am getting some water lettuce this afternoon. Once the plants I have are shaded by the water lettuce I was wondering if diy co2 would help despite the inconsistencies. The idea is to get my plants all through until I can get everything I need for pressurized co2. I would think once the whole tank is shaded that my non-floating plants would be in low light essentially. Would diy co2 cause more harm than good under those conditions assuming macros and micros are taken care of? My goal is to have pressurized co2 by December but it might take until January with Christmas coming up. I would have to use diy co2 for another 3 to 4 months. Please let know your experiences if you have ever done this or if you have run diy co2 in low light conditions. Thank you.