MY WINTER ORGANIC CHILL - CBD CRACK 1:1

Day 20 October - Try this new clips i got from Aliexpress , to see if works better than tie/bend the stems. My conclusion is no, as they grow inside the clip and stager the nutrients/water flow..i take some off after a few days and left the ones i couldnt remove. They grow so much inside the clips that i broke 2 stems trying to take them off..sad. Besides that they grow and accept LST well. Defoliated a little, just the necessary to uncover new flower buds ( around 8/9 leaves only total) Watering 0.7L each plant at PH 6.5 - 880ppm Turned dehumidifier on and cut the RH to 55% Turned lights at around 50% ( 75w) Still doing the same feeding 2ml grow-1mlbloom-1mltopmax /1.5L water They are drinking from 3 in 3 days now. Day 24 October . Preflower is here, they start preflower 2 days ago ( day 22) I had notice some weird yellow spots/clear green spots/holes in some leaves on both plants. Tested the runoff to see whats wrong ..the results: Im giving ph 6.5 water to my natural 6.2ph soil . Tested the run off from each plant, and its not good : Sativa like runoff : PH 7.01 - PPM 1322 Indica like runoff : PH 6.83 - PPM 1089 Started to see the holes and yellow spots in just 4 days, and the holes grow by each day. Started to give them PH water of 6.2 NO NUTES , just plain water with 60/80ppm to try to lower them to desired 6.5 PH and the day after noticed some yellow tips on both plants. What did i do wrong? What are this spots? Whas the preflower needs for more nutes? Is it bugs? I didnt see any, with lupe, or macro lens, up or down the leaf, didnt see anything. Im still giving them the same feed, would start to increase slowly by this week as im very scared of nutes overdose. Besides that they are growing at a good pace i guess. They seem healthy overall...