Hi there,
Some replies to your previous question.
(1) Your CO2 is meant for photosynthesis. No point having CO2 on 24 hrs as the CO2 is basically wasted. The simplest approach would be to tie together the CO2 and lighting by using the same timer. Another approach would be to use separate timers. In this approach, turn on the CO2 half and hour before the lights are switched on, and turn off the CO2 half and hour before the lights are switched off. Proponents of the second approach assert that this ensures that CO2 is readily available for the plants when the lights are switched on and less CO2 is wasted as the existing CO2 dissolved in the tank is sufficient for the last half hour.
(2) Your photo-period (4 hours + 8 hours) seems a little long. Go for 8 - 10 hours. Some hobbyists use the siesta method (I believe that you are going for this) claiming that it reduces the tank's propensity for algae growth. I have not tried this method before. However, I have had good experience with containing algae leaving the light turned on 9 hours - mainly because I ensured sufficient CO2 and nutrients.
As for your new set-up, it is a pretty good attempt. Perhaps you can increase the plant mass by adding in some beginner plants like Hornwort and such to forestall algae growth? Also, it seems that you are attempting a Glosso lawn. Perhaps you can separate the Glosso bunches into groups of two plantlets and plant them 1-2 centimeters apart.
Good luck and enjoy the hobby.

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