Back to basics - Big Bud Original

Day 29: Watered 3L per each plant. Inflow: 460 ppm, pH 6.2 Runoff: 650/655 ppm, pH 6.5/6.5, 1/1.7L ________ Day 30: Signs of light stress, while I give them only 20 DLI. Reduced to 18 DLI. _______ Day31: Started using portable AC to dry the air. It’s working great, but doesn’t lower the temp, because the exhaust pipe isn’t directly connected with the vent. Split system AC coming soon anyways. _______ Day 32: Started LST and defoliation. Yellow tips are still developing on the tops under the lamps. Could be even Phosphorus excess. I don’t believe they can be stressed from 20 DLI. Two TS1000 are dimmed via Daisy Chain at less than 50%. Distance from lamps to tops about 50 cm. Connected another exhaust pipe with 125 mm fan to extract air from tent. Humidity inside dropped even more, reaching 55% at the lowest point. VPD raised till 1.2-1.4. _______ Day 33: Split system AC arrived and installed. Temperature inside the tent dropped from 26 to 23 degrees. Humidity 55-60 %, VPD 1.0-1.4. _______ Day 34: Drip watering installed. Heavy defoliation and LST. Watered 3L each plant. 600 ppm, pH 6.0. No more water prepared. No runoff. _______ Day 35: Additional watering till runoff. 2L/2.5L 410 ppm, pH 5.9. Runoff 460/360 ppm, pH 7.0/6.9, 650/500 ml. Plant on the left looks sad. Almost all tops have lime/yellow tips on young leaves and they are twisted. Probably that’s the result of too high humidity, low VPD, and strong feeding during previous weeks. Luckily she’s not stunted. The growth continues. This time I added only half strength nutes. Next time gonna raise it to avoid starving in the beginning of flowering.