Plants are looking good so far, added about 2ml/gal to the reservoir this week and plants responded well. They are all keeping short and stocky so far and should be able to start LST training in a few days I think. I also turned up the light to 750w and the air temps are now hovering between 24c-25c. Water temps are creeping up though in the 21c range, gonna wrap the buckets tonight in foil insulation and build a water cooler for this setup soon as well. Had some Ph issues during week 4 because my pen decided to go wonky. I tried to calibrate it again and had a hard time. So I busted out an older one and decided to calibrate it and see if it worked still... calibrated in a few min and sure enough res ph was well bellow 5. So water was changed as it was time anyway and ph’d proper just before lights out so we will see what happens tomorrow.