Is this a def or lockout?

[lostboy]

Hi all,

I'm growing in hydro and the conditions are pretty much bang on. Temp 75 RH 35-40. Tap water sat for at least 24hrs. vitalink max bloom, carbo load. Potash. PK 13/14. Root stim.

This happens to most of my plants in late flowering. I supplement with sensi cal/mag throughout. So this looks like cal/mag issues so I added some more to no avail.

Any ideas?

Thanks Lostboy



Oh and she is at 69 days

 

[Hugo]

are those necrotic or non necrotic? They look necrotic...

 

[GrowerD]

What is your ph of the water ur using?

 

[The Squid]

I agree with Grower D what's your ph? Also, I have heard that temps should be around 69.

 

[Hugo]

How's it doing lostboy? Did you harvest already?

The information you gave us is very sparse and insuficient for a good help. If you still need some info please copy/paste answers from the sticky Troubleshooting Form.

Thank you.

 

[Muddy]

Looks more like a P deficiency than cal/mag. I would expect to start seeing that given their age anyway. They are starting to finish up. But can't tell if it's lockout without knowing the pH.

 

[Hugo]

Looks more like a P deficiency than cal/mag. I would expect to start seeing that given their age anyway. They are starting to finish up. But can't tell if it's lockout without knowing the pH.

By the size of the leaf I'd also say it's a mobile nutrient, because she seems one of the older leafs, although I'm more inclined to K. I would definitely introduce a higher supplement of K because not much harm can be done by it now and it's very needed in this stage to transport carbohydrates and to help the production of oil which leads to a better taste and high in the end product. It's very important for breeders!

Again, this is all very relative... Ph needed but I'd give her some K: some Flavor for example http://www.hydroponics.co.uk/Nutrient-Supplements/Bloom-Boosters-Enhancers/Ata-Organics-Flavor