@Newgrwr2018- hiya!! What is your growing medium? First thing that caught my eye was the low ph level. If you are growing in soil, you want to up the PH to about 6.4. You could be experiencing nute lockout.
I see a deficiency not toxicity so I am on board with what noobie said. @raustin what do you think?
Pic 5 looks like a magnesium deficiency, but pic 9 could be the start of some nitrogen toxicity.
Promix coco coir perlite and amendments worm castings, basalt, bone meal
@raustin lights are qb strips and cobs. Color isn’t reflected in pic. Actual color of the clawed ones is very dark green. The rest are “normal” dark green. Leave so picked off the bottom had a rust vein down the middle on 3 or 4 leaves.
Ok, then you definitely have a magnesium deficiency starting on that one plant, cobs and QBs will do that, so you need lots of Cal-Mag. The other plant, if indeed a dark green with the clawing starting is probably nitrogen toxicity.
Your PPM is pretty high at 2100, and your Ph is a little low unless you’re in hydro. I think a flush is in order to get those salts out and Ph up.
How many gal to flush. There 5gal pots.
Get ppm and ph runoff to?
Well, the rule is 3x the size of the pot, which would be 15 gallons. However, it normally doesn’t take that much water if you keep checking the PPM and Ph runoff you can use less. You want to get your PPM down to around 200 to flush out all the built up salts, and keep the flush water at 6.5 ph.
After you flush, you’ll want to replenish all the nutes, so do a feed after waiting about an hour or more.
I have filtered tap water ppm 145 should I ad Edson salt to the flush?
No, I would add the Epsom salt after the flush because you want it to stay in the soil.
Suggested ppm from epsom salt , cal mag, then grow big. 16-1800? Ph ?
If you’re adding Cal- Mag you don’t need the Epsom salt. Your PPM should be around 900 for the size of your plant, and the Ph should be 6.5 for soil.
Florakleen or Sledgehammer are 2 good flushing products FYI.
As for the TDS in veg I would shoot for a TOTAL of 900 to 1,000 ppm. @raustin knows her stuff.
Would ro be better than tap?
Not necessarily as long as you allow the chlorine to dissipate. I use a 50/50 mix of R/O and tap.
Mine has the chlorine filtered out.
If your tap has no chlorine then just use your tap water.