Hi all. I have a 120l tank running co2 injection and I'd say medium lighting ( 2x T5 12w led bulbs). Dosing 10ml of TNC complete daily and 2mg of TNC carbon daily. Lights on time for 7hours a day and co2 is light green. I have diatoms on all my hard scape and a few days before I'm due to carry out a weekly water changes it appears on the glass. Also I'm getting some green algae on the hard scape aswell. I clean it off each week with about a 70% water change but I don't seem to be winning. It's not a massive amount compared to a lot of other people on here and I guess I've just got lucky. My main question is I know to much lighting can cause algae if it's not balanced with ferts and co2 but can not enough lighting (length of time during each day)also have the same affect if not all the TNC complete is being used up by the plants?