No expert, usually over feed nutes in hydro, but I think you need to better set up your environment. Need lots of air flow, and exhaust. Either ac or heater depending on season to keep your environment a more consistent temperature, 70s to low 80s for the range. Monitoring for your res, box, and room (shed). Get remotes so you can see those from your house or phone, maybe even a camera. 5 gallon buckets would be much better as there's more water to take longer to change temps.
I'm good on my environment, just issues with right amount of nutes.