is this heat burn? possible necrosis?

[thedude87]

you folks i have some leaves turning yellow at the tips, they are new growth they are also curling down.

PH: 5.9
PPM:1200
temp 83 F
hum 48%

also i am having a possible necrosis problem?! i am concerned that my hard water(250PPM) is causing a calcium problem?

[thedude87]

anyone? i really need some help on this, i think im having problems with using heavy water about 250Ppmm i think it might be locking out some of my micro nutrients, any one have any thoughts on that?

[asdrabael]

I'm by no means an experienced grower (still on my first grow), but that looks exactly like the same problem I was having before.

Are you absolutely sure that your PH is 5.9 by checking the runoff? I was giving PH treated water and my plants started looking like that and almost died. I had to completely flush them with plain ole distilled water and they recovered really well. It could just be nute lock.

Good luck with solving the problem. Wish I could give a better answer.

[reefer101]

Whats up Dude, besides the little bit of curling your plants look great! I don't think its heat unless your temp is higher than 83. My crop's temp was 85-87 for a couple of weeks in the summer when I started and the plants didn't seem too bothered by it, the jut drank water faster.

If i were to guess, I would agree with asdrabael, it may be nute lock. I would only use distilled or RO water for your grow. Water, i believe, is the most important ingrediant in our grows and having a good/clean/consistent source of it is invaluable.

Check out this link, it helped me a lot when I was trying to diagnose potential problems. Good Luck!

Canni Problem Solver