BPP & BK RDWC 1st ever grow

Beginning of flower. Changed water res and cleaned everything up, letting them coast for now. I definitely stunted them they’re small but we’re gonna finish them out regardless! BPP is 5inches tall and BK is 7 inches. Anticipating 5 ish more weeks for the flowering. The BPP has some spots on a couple of her leaves, gonna look into it, may be deficiency, hoping it’s fixed with new bloom food as it appears to be phosphorus or potassium it’s missing. 1/26/24: water temps not coming back down to 68, the chiller doesn’t seem to be working. Reset the chiller and will be able to check again tmrw to see if things change otherwise gotta get a replacement (bought it 1/3/24 😬), plants didn’t show any difference between today and yesterday. Removed affected leaves as new growth looks healthy. Ph went up to 6.25, if it woulda went to 6 I wouldn’t have messed with it but i pHed it down to 5.85, possibly why no growth with new water? 1/27/24: Girls roots looking better. Chiller working again. PH holding at 5.8. Added 10ml more peroxide to system as it seems to work the best for keeping system clean. 1/28/24: Plants looking much healthier, ph still holding good at 5.8, did a bit of defoliation. Light intensity up to 75%. 1/29/24: Girls still look good although the BPP is definitely a runt. PH still holding good. Roots look good. Raised light intensity up to 85%. I think the light intensity is making it harder for the chiller to keep the water temps right. Considering going to a 22/2 schedule to allow water to cool a bit. Water change 1/30, and begin new week.