Plants very sick - multiple deficiencies?

[Moto823]

They were all relatively healthy before, but its been getting much worse.

All the older leaves are yellowing. Some have spots and burnt tips.

This is my grow journal, if it helps give more info.

http://forum.grasscity.com/grow-jour...0w-mh-hps.html

Temp ranges from 75-90
Humidity from 32-50%

18/6 under my 400w MH about 12 inches above the tallest plant top

Every other watering they get their dose of Pure Blend Pro Grow and a drop of superthrive mixed with a gallon of distilled. When they dont get nutes they get straight distilled.
If they need more then i will just add straight distilled until water fills up the drainage, and empty off/test the runoff.

Runoff pH was about 6.3-6.5 for the Big Bud #1 (second and third picture)
About 6.8-7.1 for the other plants - Unknown Stain(first picture), and a Northern Lights(last picture), Big Bud #2(fourth and fifth picture)

The Big bud #1 has yellowing and browning/crispy leaves with dark black spots on it on the older fan leaves but its getting worse. Its slightly over a foot tall, and the root ball is thick around the edges of the pot. Is it time to transplant? (8 weeks)
The NL has crispy somewhat burnt tips with yellowing on the older fan leaves.(8 weeks)
Unknown is still very healthy with only some burnt leaf tips on its oldest leaves(5 weeks)
Big Bud #2 has burnt and bright neon yellowing older fan leaves(5 weeks)

They need to be watered today, how can i fix them?

Thanks!

[luckyleaf2]

few questions. How often do you water your plants and how do you judge when to water?


Whats the NPK of that fert you are useing?

And if you could possiblt take pics under regular incondescent lighting)house lamp)

would help a lot.Most of your pics ate in the dark

[Moto823]

Ok i will take new pics when i get a chance

Its Pure Blend Pro Grow 3-1.5-4

I have that instant soil moisture tester. They get watered every 2-3 days usually.
I let the bottom of the soil get to at-least a 2 on the tester before i water.

[luckyleaf2]

Originally Posted by Moto823

Ok i will take new pics when i get a chance

Its Pure Blend Pro Grow 3-1.5-4

I have that instant soil moisture tester. They get watered every 2-3 days usually.
I let the bottom of the soil get to at-least a 2 on the tester before i water.

Kinda in a hurry so i will keep it short.

That NPK ratio isn't the best for veg stage.

You need the Nitrogen to be the higher number in the NPK ratio

Watering every 2...........3 days is way to soon for your container size.

Plants need a dry spell between waterings to absorb the remaining oxygen in the soil before another watering.


As soon as you get the clearer pics up i/or someone will try and help you better pinpoint your plants problems.

[Moto823]

Every 3 days is too often?
How long should i let the soil be dry before i water again?

Heres some new pics.
Also, when i should i transplant my biggest plant?

Pics are in this order: Big Bud 1 and 2, Big Bud 2, Big Bud 1, Northern Lights(twice), Unknown Strain(twice), Bubblegum Seedlings, and the leaves were clipped from Big Bud #1

[luckyleaf2]

Few more questions


The 11 week old plants have they been in those same containers that long or exactly how long have they been in those containers??(I'm asking this question because of how often you are watering.If in fact you are having to water every 2...3 days then could be root bound.

11 weeks I'm sure they are showing sex??

I see that the plants are different is sizes vertically, are you doing anything to "evening" up the canopy so smaller plants can get equal lighting or close??

The problem with the leaf defs. could be lack of light or lack of micro nutes in your fert.

[Moto823]

Big Bud #1 and the Northern Lights have been in their pots almost all their lives, they started in party cups, and yes both are confirmed females.
And my correction, the smaller plants may be closer to 6 weeks. Big Bud #2 is likely a female, im unsure about the Unknown Strain.

The oldest plants have a tight root system around the edges, i was not sure how long i should wait before transplanting. And if i should fix the deficiencies first?

I topped Both Big Bud plants but thats it

[SmknVTEC]

Looks more like toxicity to me ie too much ferts.

[Moto823]

Thats what else i was worried of.

So to much or not enough nuts will cause deficiencies?
I dont own a PPM meter, i suppose theres no true way of telling what it might be?
Should i try watering with straight distilled today?

And the seedlings have only been fed a tiny bit of super-thrive and liquid karma.

[SmknVTEC]

Originally Posted by Moto823

So to much or not enough nuts will cause deficiencies?
I dont own a PPM meter, i suppose theres no true way of telling what it might be?
Should i try watering with straight distilled today?

And the seedlings have only been fed a tiny bit of super-thrive and liquid karma.

Well not exactly, I would think it either has too much or not enough nutes, can't really be both unless, for instance, it has too much nitrogen on one end and a calcium deficency on the other from lack of calcium in the nutes. Just an example though. Generally it is either or.

They are in soil right? PH sounds fine if they are.

I would give it just straight water for the next few days and maybe even try a flush and see what happens. If they improve or at least dont get any worse after the flush you know it was too much nutes. If 72 hours plus after the flush they look worse, they need more food.

[Moto823]

My NL is drooping nicely, and the others look like they are soon to follow
I will water them today and see what happens.

Anything else i can do to help my girls?

Thanks

[SmknVTEC]

Well droop is usually from under or over watering. If you flush wait until they dry out completely. That goes for watering in general.

[Moto823]

I watered them with 2 gallons of straight distilled.
Big Bud #1 still has a soil pH of 6.5
The rest have a pH of 6.8-7.1

They look healthier, i clipped all the dead leaves leaving those that were dying to see if they worsen or not in the next few days.

Also, my plants are about 8 and 5 weeks old, not 11 and 8.

Now that i think about it, they could definitely have nute toxicity. They were very healthy until i started adding nutes i believe...
Should i just continue watering with Distilled until they are healthy again?

[SmknVTEC]

Originally Posted by Moto823

Should i just continue watering with Distilled until they are healthy again?

Yes sir.

[Moto823]

Alright then will do.
About how long before i should add nutes again?
I wanted to continue veg until at-least mid june when the bubblegum seedlings will hopefully be mature enough to flower
Also, i wanted to try cloning as well - should that wait until the plant is healthy again?

Thanks