Hello farm, Having some trouble on my first grow. Cliff notes: 3 gal soil pots, watering at wrong ph, gave too much calmag. Will 9 gals tap water @ 6.5ph 75ppm flush save my girls? Growing in soil with vermiculite and perlite. 9 week veg, day 6 into flower. Been feeding 250-450ppm 5.9 to 6.5 ph for last month. I water once a week so the pot dries out. I feed 2 weeks then plain water third week and repeat. Things have been pretty good up to this point, although some lower leaves were yellowing on all plants my Canuck white rhino indices was worse off than the others. I thought I was deficient on cal mag so I should add some. 2 days before flipI went to feed the plants some grow and bloom for flip transition (ended up flipping late) and mistakes were made measuring the calmag, I think I Added too much. I added about 30ppm calmag to 10 gals of water with 430ppm of botanicare grow and bloom already in there for total ppm of 460. The next day my canuck cookies had some wilted leaves near the top. I thought I overfed and would cut back next time. The day after the blue Hawaiian got hit too same way. Gave all the girls plain 6.5 water, until 1 gal ran out bottom. Thought I would let them dry out, then plain water again. Also my 20$ Amazon ph pen has been acting glitchy lately, I’ll replace it and check the calibration. 5 days later, there’s burn marks coming from the edge onwards and the leaves are drying and curling. But not all the plant is affected, the lower stuff hasn’t been affected. and canuck c99 is showing it too. Day 6 I calibrate both meters and the old one was reading 5.8 on the 6.8 calibration solution. So I think I’ve been way off on ph this whole time stressing them out, and now I’ve given them ammonia toxicity trying to correct my false magnesium diagnosis. To make it worse my Canuck king tut just got smoked by whatever it is, and it’s not leaves getting burned it’s smaller stems keeling over going limp and real dark. So far the 2 indica doms haven’t shown signs but I’m sure it’s coming. So how do I flush out the cal mag, fix my ph and save the girls? 9 gals of 6.5ph tap water? I’m real green and I would appreciate an experienced opinion before I kill them. 1. Are you growing from seed or clones? Canuck Seeds 2. How old are your plants? 10 weeks 3. How tall are your plants? 28”- 40” indicas and sativas 4. What size containers are they planted in? 3 gal 5. What is your soil mix? 2 parts bagged cow manure, 2parts bagged potting soil, 1 part perlite, 1 part vermiculite, handful spaghnum moss. 6. How often do you water and what type of water do you use? Once a week, 75ppm tap water. 7. What is the pH of your water? 8 after chlorine Evaps, ph down to 5.9 to 6.5 for plants 8. What kind of fertilizer do you use and what is its NPK ratio? Botanicare grow and bloom 9. Do you foliar feed or spray your plants with anything? No 10. What kind of lights do you use and how many watts combined? 1000w mh veg / 1000w hps flower. 11. How close are your lights to the plants? 28” 12. What size is your grow space in square feet? 5x4=20 13. What is the temperature and humidity in your grow space?19-29Celsius. 14. What is the pH of the soil? Unknown 15. Have you noticed any insect activity in your grow space? Springtails, 2 fungus gnats on sticky paper. Some small transluscent worms in tray after watering (fungus gnat larva?)- use mosquito dunks and diameter IOU’s earth top dress 1 inch. 16. How much experience do you have growing? I watched a YouTube video.