Dark Devil Auto

Week 5 seemed like it was coming together okay. I thought we were on the right track dealing with the nutrient deficiencies showing up in the leaves. All of a sudden, over the course of 24hrs, Plant #2 really broke out in a "rash" of leaf deficiency symptoms. We made a point to immediately do what we should have been doing 2 weeks ago, which was to test our runoff ppm levels. I felt like we'd gone very light on the nutrients so far and that was part of the reason the plants were showing deficiencies. Instead, given our findings, i suspect the deficiencies could have been caused by lockout... Week 6 (Flowering week 3) Day 36: - runoff tests found both plants had initial ppm levels in the 5000+ range! 😮 (Plant #1: 5350ppm / Plant #2: 5600ppm) - We flushed each plant with approximately 4 gallons of dechlorinated, oxygenated tap water, pH'd to 6.5/6.6 until readings were under 2000ppm. - runoff pH of each plant was 6.1-6.2 - increased HLG "Elite 360" light intensity from 75% to 80% - humidifier disconnected Day 37: - no change Day 38: - calcium deficiency worsening - soil is still damp from flushing on Day 36 so we're going to wait 1 more day before resuming light feedings. Day 39: - watered with dechlorinated tap water, pH'd to 6.5/6.6 until runoff - runoff from plant #2 tested at over 2600ppm, plant #1 tested at close to 3000ppm - flushed each plant with approximately 4 gallons of water but ran out of dechlorinated water. Plant #2 runoff dropped to about 1800ppm, while Plant #1 was still around 2000ppm. I wasn't sure if it would be better to continue flushing with straight (non-dechlorinated) tap water, or to leave as is and hope that the plant can handle the 1800-2000ppm levels. - plant #1 isn't showing near the same colour changes as plant #2. Day 40: - I think skipped a day in the journal somewhere this week... I think i might've gotten days 39 & 40 swapped around here... not sure... - no change overall - Plant #2 looks about the same, no improvement but not worsening. Day 41: - what a disheartening difference a day can make! Plant #2 has seen a marked decline in health since yesterday. Leaves are becoming very brown and blotchy, curling up and overall just looking terrible. I'm afraid to feed more, given the runoff levels were still fairly high after yesterday's flush. The weird thing is that Plant #1, although showing a few spots on a couple of leaves, is not having the same issues. I'm scratching my head, wondering why such a difference between the two plants? - both plants are still quite damp from flush on Day 39. We positioned the circulation fan on the floor so that it's blowing against the pots, hopefully to dry them out a bit faster. We've also increased our fan exhaust speed, bringing the overall RH down to about 48-50%. Day 42: - did slurry test with soil from Plant #2, taken from about 1/2 down the side of the pot. Used demineralized water, pH 7.0. After 30 seconds the ppm readings were 600. After 10 minutes, this rose to 670 ppm. - Plant #2's deficiency definitely looks like Phosphorus... the curled, brown leaves, red leaf stems... am i wrong? - We will plan to water a bit later today, trying to give the soil as much time to dry out as possible without letting the deficiency go on for too long. We will plan to feed with a relatively weak solution of Remo's Bloom & Astroflower, probably around 300ppm, aiming not to exceed 400ppm. UPDATE: - Watered with a 350ppm solution of Remo's Bloom & Astroflower, as well as GH's "CaliMagic"... approximately 2ml of each per gallon of water.