Keeps happening every grow. Throwing in the towel

What is going on. Is it neut burn or deficiency?? 1 month into flower, 2.5 gallon pots, 750watts of fluorescent light, not to hot and about 2 feet from the light. I'm using inert growing media with canna coco (started flower at a+b 25ml) now at A-50ml + B-50ml, 25 ml canna boost, and supplement 30 ml of cal+mag for 5 gallons of water ph 5.8 . All the meaty parts of the leaves (not the veins are turning brown/brittle and dying). All the tips and serrated edges of leaves start to curl upwards, brown and die. The entire leave structure is beginning to curl up towards the vein like a taco instead of laying flat. eventually the tips of the white hairs will start to brown and curl. This seems to happen every grow and im sick of being forced to harvest early to salvage anything before the plant dies. THROWING IN THE TOWEL!!!! Please help.

Post some pictures with a natural light and turn off the grow light. Need to see color of the leafs in order to have a better idea.

What kind of soil/medium?

Looks like heat stress but need better white light pics.

2.5 gallon pots are very small for flowering maybe root bound bet when you pull them you notice absolutely packed roots!!!!

will take pics today.

Rickypsimer said:

2.5 gallon pots are very small for flowering maybe root bound bet when you pull them you notice absolutely packed roots!!!!

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Rootbound or some other root problems such as being perpetually wet.

lysergicals said:

What is going on. Is it neut burn or deficiency?? 1 month into flower, 2.5 gallon pots, 750watts of fluorescent light, not to hot and about 2 feet from the light. I'm using inert growing media with canna coco (started flower at a+b 25ml) now at A-50ml + B-50ml, 25 ml canna boost, and supplement 30 ml of cal+mag for 5 gallons of water ph 5.8 . All the meaty parts of the leaves (not the veins are turning brown/brittle and dying). All the tips and serrated edges of leaves start to curl upwards, brown and die. The entire leave structure is beginning to curl up towards the vein like a taco instead of laying flat. eventually the tips of the white hairs will start to brown and curl. This seems to happen every grow and im sick of being forced to harvest early to salvage anything before the plant dies. THROWING IN THE TOWEL!!!! Please help.

Click to expand...

Are go fine for a while and then as they get older this starts to happen?

If I'm right then I would bet that you are not letting 25% run off... are you keeping it soaked and watering every day til run off?

hotrodharley said:

Rootbound or some other root problems such as being perpetually wet.

Click to expand...

Hes it coco... it should be wet all the time

oill said:

Hes it coco... it should be wet all the time

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Not according to a producer of coco. It can be too wet eh?

wish I could help. is it the same strain every time? is it too much nutes? maybe it's a picky strain.

Why are the lights purple if they are fluorescents?

Are they tanning tubes?

could be too wet too. too wet forces them to drink more and take up more nutes i think. but no coco eperience here.

The Fluorescent light is a KIND LED.

The medium I'm using is COCO.

I'm letting the coco get just damp to the touch about an inch in making sure not no dirt sticks to my finger before watering again obviously not to the point of wilting. I understand the basics of over watering. I'm definitely not watering every day.... About once per 5-6 days.

I kept these plants small which is why they are in 2.5 gallon pots only 4 buds per plant and about 1 foot high from trunk to canopy.

I have 5 gallon fabric pots if i need to try transplanting them but will be a bitch because of already flowering and scrog but please advise on that.

This is the same strain. Clones of seeds i've gotten a while back. maybe the 3rd or 4th batch. It's happened every time almost at about the same time in the grow... 1 month into flower and just starts going down hill from there.

attached new images with real right.

Hang on a second then, aren't you supposed to water coco twice a day?

If you are running PK you could well be overfeeding..some of those PK formulas are pretty strong, failing that it looks like heat stress ...whats your min max and ambient room temps..? - STELTHY

I typically feed my coco at 1.8ec, 6.2ish ph.
3 to 5 times per day.
Root bound is good for coco mutifeeds.

This is the techno on coco.

The stripey burn pattern in the first picture indicates a pH problem. Likely the root zone pH is way lower than your input pH.