Second indoor grow. Deficiencies galore!

[HappyLittleTrees]

Hey all you cool cats and kittens! I am just about to finish my 7th week. This time around I kept record of PPM and pH in and out. I used calmag, tiger bloom, big bloom, and black strap molasses. Unfortunately, I lost most of the notes as I was using the “notes” app in my phone and they magically disappeared one day. The ppm and pH in was the same for all 4 plants. As you can see in the pictures, the results vary. Leaves all have red stems and one plant turned purple, with underdeveloped buds. That plant also received the strongest light. It was in the center of the 4x4 tent with a maxisun 400w led. The 4 plants that are week 7 are supposedly grape kush and the one plant is grand daddy purp at 5 weeks. I didn’t intend to flower the gdp, but one of the seeds I had went auto.
I’m growing in soil, FFOF, 400w LED, 78F, 60 rh. Even the gdp has red stems on the leaves.
Today’s results from tap water pHed to 6.5
plant 1 runoff pH 6.2 ppm 686
plant 2 runoff pH 6.3 ppm 1040 (purple with terrible bud development)
plant 3 runoff pH 6.1 ppm 780 (good bud development)
Plant 4 runoff pH 6.0 ppm 1600 (good bud development)
GDP fed 1 tsp calmag ph 6.6 ppm 365
runoff pH 6.2 ppm 946 (leaf stems red and leaves yellowing. Showing signs of calcium deficiency I believe.
The plant in the middle received about 40k lux the ones around it got 30k-32.5k lux. Any ideas on what my problem could be would be appreciated. Looking to improve my grows. I have the same strain as the 4 plants outdoors in FFOF doing great, but not flowering yet. Last summer there were no problems with deficiencies for the outdoor.

[SoOrbudgal]

Mine is running just the opposite of yours. Indoor doing great outdoor i had early flowering in late march when i put them into a greenhouse to veg more before going into the wild so they are looking like cow dung. Anyhoo.......yes you do have some ph issues LOL I would say to remove all damaged leaf all of them allow more airflow and light to hit below canopy. That's all i gotta say maybe a good flush with some water allowed to dry but remove all the rotting crap from the plants.

[HappyLittleTrees]

Haha! I’ll trade my problems for yours. Deal?
I stuck the extra clones outside and don’t really care as much for the outdoor compared to the indoor. I’ve been using the $30 Hanna meter to pH my watering/feedings. I ordered a more accurate meter yesterday. My goal is to get better with each grow, but this is definitely a bit of a disappointment. I compared my pictures from 2 weeks ago and boy did things go bad in a hurry. I’ll have the new meter tomorrow. Can’t wait to see the new reading. I’m almost at the point that in my next run I will water half the plants with straight tap water and half with pHed water. The plants in the backyard get watered from my sprinkler system which is obviously the same as tap. I was told at my local hydro spot that I can’t compare that with indoor because there is infinite soil in the backyard and the pH tends to even out better.

[SoOrbudgal]

Partially true what that fella told you. Inground soil also depends on it's makeup but yes most the time no issues except bugs. Hey you will get some nice smoke from your plants better than nothing for sure may be really good LOL . Best of luck and really look forward to seeing what you got next round.