Deficiency or pH problem or...? Help.

Hey All,

Day 80 total
Day 18 of flower

RH Range- 30%-58%
Temp. Range- 74F-84F

1- PR - Indica - Clone (not sure how old but on day 18 of flower)
1- XXX - Indica - Clone (not sure how old but on day 18 of flower)
1- Bag Seed- Hybrid? - Seed ( 80 days from seed sprouting)

FFOF soil in 3gal. pots

Last Watering - Fox Farm Big Bloom, Grow Big, Tiger Bloom, and CalMAg
PR
5/27- 6 cups- pH 6.8- 800ppm (Fox Farm Big Bloom, Grow Big, and Tiger Bloom, CalMag)
6/1- 10 cups- pH 6.3- 320ppm(lowered pH and ppm because I thought I was burring them with nutes and I thought I might have a Phosphorus deficiency)

XXX
5/27- 6 cups- pH 6.8- 800ppm
5/31- 4 cups- pH 6.3- 426ppm (Tiger Bloom only, thought that I might have burned them a little with the last watering that had all the FF nutrients including CalMag)
Run off- 200ml- pH 6.4- 540ppm

Bag Seed
5/27- 8 cups- pH 6.8- 800ppm
5/31- 15 cups- pH 6.3- 426ppm (Tiger Bloom only)
Run off- 350ml- pH 7.1- 1300ppm

Been battling Powdery Mildew for the last few weeks. Last week started using Zero Tolerance + Einstein oil mixture and sprayed all the plants, increased air circulation, and haven't seen it in the last week or so. Sprayed twice. Last night being the most recent.
Original Mixture
500ml- Tap water not pH'd (Probably should pH, tap avg. is 8.0 pH) - 100%
10ml- Zero Tolerance - 2%
2.5ml- Einstein Oil - .5%

Increased Solution
500ml- Tap water not pH'd
12.5ml- Zero Tolerance - 2.5%
7ml- Einstein Oil - 1.4%

The plants all seem to have the same problems despite them all being different strains. The older/lower growth either discolors to a lighter green with little brown spots. Some leaves seem to have big dark spots and then the spot will dry out and darken and eventually spread to the rest of the leaf. I usually cut them out right away when I notice them. Recently, after the last two waterings I noticed a bit of a droop.

PR
5/30 Day 15 of Flower

5/30 Day 15 of Flower - You can see the drooping of the tips.


5/31 Day 16 of Flower

6/2 Day 18 of Flower - Drooping and discoloration

6/2 Day 17 of Flower

Bag Seed
6/2 Day 18 of Flower - ???

5/31 Day 16 of Flower


6/2 Day 18 of Flower- Over top view, it looks nice and healthy in my opinion, unfortunately I don't have photos of the older/lower leaves, I removed them already. But some leaves are getting the big splotchy spots that turn into dry spots and the rest of the leaf shrivels.


Let me know if you guys need more info. I'm not really sure what is going on with these plants.
I thought initially that it might be a Phosphorus issue because I had been watering them with 7.0pH water with nutes are 300-500 range. Thought lowering pH would help with Phosphorus absorption. Does PR need more nutes, maybe I'm starving her? Or less? For now I'm going with less. Next watering I plan on doing plan pH'd water again, like the last watering of PR. Used Cal/Mag with the last few waterings because I thought the yellowing and little brown spots were calcium deficiency.

I appreciate any thoughts/opinions or advice.

Thanks,

Freshn'Green

Hey there,

In my humble opinion I think they're tarting to find shortages of Zinc, Moly and perhaps a few other of the traces.

Do you have a trace mix handy??

What's your tap water EC please?



_