[issack]

Originally Posted by mack 10

What medium? Or you hydro, sorry if I misses it.

To die off in one day?
Must be some killer virus or root rot?

Becuzz coco. That Holland stuff in purple bag. And 20% perlite

[issack]

Could this be strain dependent? I have never grown Pineapple Chunk indoors , and my last run was all Pineapple Chunk, and this run the only one that died is a pineapple chunk, so my mountain apple OG on the left is looking really good I don't know just a theory

[gaiusmarius]

why do you water so often in coco? i don't like to go more then 4 times every 12 hours and no water during lights off. but again this can't be the reason for the problem, just with dtw you must waste quite some water, is it really beneficial? i know it does no harm, have left my pump on for days by accident and this was a re circulating set up, plants didnt bat an eye.

[mushroombrew]

Fusarium Wilt. It is always present in soil. Have you had contamination?

It can spread. Remove infected plants fast. And do not recirc until it goes away.

I used potassium silicate. It slows it down. And a very unorthadox bleach application.

I pulled a dead plant from the media. Noticed the infection is right at the base of plant. It stinks bad. You may also notice swollen tissue and maybe some brown areas right at the base.
I used bleach at 10%. Just a quick mist of top of media. And a few cc on base of plants.

NOT A DRENCH.

Anyway I got a 70% survival rate. The rest died. Apparently I am the first to beat it as nobody believed me. It is generally 100% mortality once infected...i disagree.

[prune]

Ya, overwatering I think, so much so that the colder less active plants get soggy and moldy (as the foreign guy says). Then the trays are an open vector to spread the disease.
Sometimes (especially with short ceilings) you need a fan underneath a split to further defuse and break its cold spots. and then the overwatering...

[issack]

Overwatering in coco.? They are 4 feet tall in a 2 gallon pots. They drink like no other . When lights first come on I have to hit the Button on my DNE timer 3 to 4 times just to get run off. And by end of the cycle before lights are out rhere is no wet areas in the gutters or where it drains out of each pot. So it's drinking every drop

[issack]

Originally Posted by mushroombrew

Fusarium Wilt. It is always present in soil. Have you had contamination?

It can spread. Remove infected plants fast. And do not recirc until it goes away.

I used potassium silicate. It slows it down. And a very unorthadox bleach application.

I pulled a dead plant from the media. Noticed the infection is right at the base of plant. It stinks bad. You may also notice swollen tissue and maybe some brown areas right at the base.
I used bleach at 10%. Just a quick mist of top of media. And a few cc on base of plants.

NOT A DRENCH.

Anyway I got a 70% survival rate. The rest died. Apparently I am the first to beat it as nobody believed me. It is generally 100% mortality once infected...i disagree.
View Image

I'm in Coco doing drain to waste each pot is its own entity. I noticed the pic you posted is flood and drain. And the symptoms don't look like the plants you just posted either. They simply just Wilt and die from a perfect condition the day before

[issack]

Leaves are starting to fall as the plants mature. I'm noticing dead leaves falling on top of the pots I'm just leaving them there right now. Super hard to reach under there.. maybe they're creating a mold? Some kind of fungus?

[issack]

Originally Posted by gaiusmarius

why do you water so often in coco? i don't like to go more then 4 times every 12 hours and no water during lights off. but again this can't be the reason for the problem, just with dtw you must waste quite some water, is it really beneficial? i know it does no harm, have left my pump on for days by accident and this was a re circulating set up, plants didnt bat an eye.

I'm going off the coco trees method.. the Stickley in the Coco forums. That guy ended up every hour feeding and the concept is to feed as often as you can and create as much oxygen in the plant with fresh water.. low EC. I don't go over 850ppm. I do waist about 6 gallons in a 12 hour setting though. I don't care about waist. I was just mimicking this method. And from what I have researched is that it's really almost impossible to over water coco plants especially in the stage like this with their drinking as much as they can.. but maybe i am overwatering .?? Idk at this point. I'm open to every single option that could be a problem.

[issack]

Originally Posted by prune

Ya, overwatering I think, so much so that the colder less active plants get soggy and moldy (as the foreign guy says). Then the trays are an open vector to spread the disease.
Sometimes (especially with short ceilings) you need a fan underneath a split to further defuse and break its cold spots. and then the overwatering...

I don't understand what you mean by trays . This is a DTW system. There is no flood trays where all the plants get the same solution recirculating where something can spread from the water.
I'm completely ruling out overwatering everyone.. there is no possible way I'm over-watering with 4ft plants in 2 gallon pots that drink almost 30 gallons a night. And by the time lights go out the medium is almost dry.
This plant that died is under the a/c though. And it gets cold there I'm sure.
I have no mold no powdery mildew or anything in this room I've never actually had powdery mildew in a grow room. I always Overkill everything and make sure my climate is perfect I spend the highest dollar to make it work.
Come to think of it now on the last run the plants that died we're in direct line of the AC when lights are out. ( this one too) Cause when lights are on the blower fans divert the air. As well and oscillating fans.. maybe they're getting too cold? When lights are out