[Cherma]

If you need some PH adusting, A suggestion on this maybe to look into an aquarium store or pet shop> look for their "PH Up and or PH Down", for control for aquariums and fish> It works as well for plants both in soils and Hydros>
good to see the lights backed off some> looks good on ventilation>
for supplemental feedings with FF Big Bloom ot Tiger Bloom I add some liquid Sea Weed extract, this makes available 50+ trace elements immediately> and can help adjust the missing nutrients>