New Grower Lot of problems. Need help

[Crusty]

Plant looks rather healthy over all. It is sacrificing mobile nutrients from the leaf to move them to the buds. If the new buds look healthy I would keep the cool and just give water, let it sacrifice the leaves and suck it all out. How many days until harvest?

I think lot more left for them. Buds are really small they begin to form just few weeks ago. I know it's 6th week, but I made lot of mistakes, and I think I really extended their life

 

[Disburped]

I think lot more left for them. Buds are really small they begin to form just few weeks ago. I know it's 6th week, but I made lot of mistakes, and I think I really extended their life

Mistakes are good, take note and adjust the next grow. I don't know why you have so much perlite on the top, it's not where you want it, maybe it did float up when you flushed it. Also you have a lot of space on the top of the pot, after such a flush you may want to fill it up with fertile soil and top water the soil so nutrients leach to the roots. My experience is that a low nitrogen soil will speed up the process cause the plant rush to make it's thing but some nutrients may slow the process. In cases like this I see no other way than to stick to a plan cause from a consistent plan it's easier to make right adjustment for next grow and that knowledge is more important than a perfect grow every time.

 

[GeorgeCloney]

First of all,...
What all these plants have in common is.....
Let's examine the facts...

I've found auto's to be very finnicky about light...how high/low are your lights?...do you know the PAR?..guess not.
Some are suffering from a lack of phosphorus, others from magnesium.
The rusting edges and purple leaf from the magnesium deficiency.

Now I may be wrong, and I'd like a more experienced grower to chime in to my recommendation.

I also found in growing cannabis, that less is usually better to a certain point.
Mary J likes having dry feet, have you been over watering lately?( just asking).
It's A LOT EASIER to tone down a situation of nute burn vs. nute deficiency ( starvation).
400-500PPM for these plants sounds quite anemic.

My recent grow behaved like this because the plants were root bound/over watered in compressed soil...etc..etc.
I flushed, and started by feeding a higher ppm for 1 week in the over watered soil, then repotted to airy soil.
Worked for me.
You are beyond this point, so if I were to correct this, I'd start by feeding a little stronger with a something with more phosphorus.
Did the plants stall growth at any point?....or just start going light?

The light plants ( need nitrogen).
The rusty edged leaves ( phosphorus).
The light/rust fan leaves, calmag deficient.

Also are these plants all seeds from the same mom?
Phenos's act weird sometimes..

Keep an eye on your runoff ph ( is this a ph issue keeping nutes from being absorbed???)
Keep an eye on EC (ppm's) from the runoff, 400ppm is really not enough food for these plants a their stage.
Especially potassium.

So to sum it up,
Flush with RO or distilled water first.
Then give them a good feeding.
Plant will thank you for it..
Cheers,
GC

 

[Crusty]

Thanks for so informative answers!!

My lights are 30cm above the highest grils top.
I may be overwatering, because I rely it on pots weight. If it seems to be light I water them.
At the moment plants really stopped progressing... They did the same few times during their life...
They are not from the same mom. I had 3 different strains and I accidentally mixed them together was to stoned...

There is one more thing I'm concerned about... Is it good to give nutrient rich water just after the flush? Like bloom nutrients with high P and K. So the ladies won't starve more till the soil becomes dry?

 

[GeorgeCloney]

I did a copy and paste to answer a little better for you...


My lights are 30cm above the highest grils top. Depending on the streghth of the lights that should be fine.
I may be overwatering, because I rely it on pots weight. If it seems to be light I water them.This is a very good approach, don't stop.
At the moment plants really stopped progressing... They did the same few times during their life...Cold temps, and phosphorus deficiency will do this, thats why I say get the temps up to 25 to 27c. Make sure your night temps don't drop more than 20c.
They are not from the same mom. I had 3 different strains and I accidentally mixed them together was to stoned...

There is one more thing I'm concerned about... Is it good to give nutrient rich water just after the flush? Like bloom nutrients with high P and K. So the ladies won't starve more till the soil becomes dry? .
The idea of flushing is kinna like hitting a reset button.
You're flushing out the excess nutes / calcium and magnesium / to start over new.
What kind of soil/medium are you growing in?
If its soil DONT FLUSH, it'll take forever to dryout...so dont!
If you can measure your ppms when you prepare your feed.
Double your present feed (nutes to water), and make sure you measure your ph to 6.2 to 6.7 (if soil), 5.6 to 6.0 if coco.

Your plants will be fine,
I think that given their stage in life, they're starving...
YOU CAN'T KILL A PLANT WITH OVER NUTES.
The plant will show all kinds of signs of being unhappy.
BUT NOW YOU KNOW WHY!!!!!
So tone it down as required.
Get what I mean?

 

[Disburped]

Thanks for so informative answers!!

My lights are 30cm above the highest grils top.
I may be overwatering, because I rely it on pots weight. If it seems to be light I water them.
At the moment plants really stopped progressing... They did the same few times during their life...
They are not from the same mom. I had 3 different strains and I accidentally mixed them together was to stoned...

There is one more thing I'm concerned about... Is it good to give nutrient rich water just after the flush? Like bloom nutrients with high P and K. So the ladies won't starve more till the soil becomes dry?

The right time to water with nutrient rich water is normally when the soil is not very dry. You seem to have a lot of perlite in the soil, it's kind of difficult to overwater perlite rich soil if you have pots with hole in the bottom cause excess water drain good. I would probably give it all nutrients, NPK+ micro but not too strong solution if the soil dry fast cause then I can give nutrients soon again. The grow+bloom+micro should contain some calcium and magnesium so I would not worry too much about it. George's suggestion to repot is good, then it can reach the nutrients in the new soil and you don't have to mess so much with the bottles.

 

[Crusty]

Thanks guys, I will feed them good today.
My medium is super soil. Bio bizz all-mix with clay pebbles on the bottom and perlite on top.

Also I will try to take my ceramic heater and make automated temp control so the temperature won't drop down 20 C.

Thanks one more time. I will post the further progress

 

[Waira]

- long term underfed mate, she's eating what she can from the fans, but not all nutrients are mobile within the plant,... I see multiple defc.'s happening, so up the feeds and get PK booster going too, P defc. is going to start hitting hard now.... It takes time to correct, a few days isn't enough....
Another possible factor is off pH in the pots... AN is "pH perfect" only when in solution, not once in the pot... Consider getting a soil pH probe, like the Accurate 8... If the pH is off enough it'll lock out certain nutes, and adding in more will likely make matters worse.. I know you're in a catch-22 here, but until that pH is known, it's a gamble to consider,...
You could do a crude run-off test using just plain water, RO/Di is best otherwise the pH can be skewed by the water's hardness (buffering it)... collect in a clean container the run-off, about 15-20% of pot volume, and test it with the pH meter,...

 

[Disburped]

Thanks guys, I will feed them good today.
My medium is super soil. Bio bizz all-mix with clay pebbles on the bottom and perlite on top.

Also I will try to take my ceramic heater and make automated temp control so the temperature won't drop down 20 C.

Thanks one more time. I will post the further progress

If it's autos don't bother with ceramic heater, keep the lights on all the time, blow the heat into the room and let it circulate, let the lights heat the room for ya!