First Grow

1/8 RH 46 41/69 Temp 82 64/86 Stress galore! Knowing that nutrient burn and pH problems are common for new growers, I was trying to be exceptionally vigilant about locking down the correct nutrient solution. Frustratingly, it appears that hasn't gone as well as I've hoped. Two days after feeding on 1/6 with a 2.12 tsp/gal solution, the plants are showing indications of either pH fluctuations or nutrient burn. Corrective action included a mild flush with 1/2gal pH'd water and misting the leaves with an anti-fungal solution in case of mildew (A damp towel may have also been throwing spores from another room). After looking at last week's feed, I realize the nutrient solution had much too high a TDS PPM. I'll be double checking the PPM count from now on, and have invested in a pH pen and PPM meter. Once the PPM meter arrives I'll be flushing to <400 PPM to make sure excess salts are removed from the coco. To add to the disaster, the extractor fan was running but the exhaust had no air coming out of it. Moving the sock over the carbon filter was successful in restoring air flow, but I suspect the conditions were prime for mildew growth as well (RH>40% with less air movement). 1/9 pH and PPM pens arrived, and I found my TDS was sky high. I feel like an idiot for allowing myself to nutrient burn these plants in week 2, but this was always intended to be a learning experience. All the data logging I've done was in anticipation of problems around this stage. As much as it pains me to post my PPM levels, here they are before and after flushing. NL#1 PPM: >900 to 390 NL#2 PPM: 530 to 262 NL#3 PPM: 674 to 302 WW#1: 506 to <300 WW#2: 574 to 265 WW#3: 500 to 280