Good question! Although its generally said that the ideal PPFD for flowering is 600-900 PPFD, plants will still flower and grow decent buds at a lower PPFD. So you getting 550 PPFD should be sufficient. It’s hard for me to say yes or no for “keeping the lights on full blast that close to the canopy during flower”. You may just want to try it and then increase the light distance if you are seeing problems.
December 24, 2024 at 10:47 am
in reply to: Humidity#4636
66-73% isn’t a very big swing. Powdery mildew is most at risk when you have high humidity (generally above 60%) and a lack of airflow. I’ve had swings from 30%-60% and the plant takes it. Sure, it’s not ideal, but the plant will still grow.
The reason why a carpet is a concern is mostly due to not being able to clean up as efficiently. For example if you spill nutrient solution or soil then it will be a pain to clean up. If you are growing in a grow tent and it’s on a carpet, that’s fine.
Cannabis will grow under the conditions that are mentioned there. Pretty decent recommendations there. Although, different genetics can react differently depending on the environment so keep that in mind.
Wow the plants really exploded in growth! The water temperature you mention of 20°C is good. Your pH issues could be impacted from the H2O2 like you mention. With your water temp now being under control, you can probably stop the H2O2.
