Leaf damage? Dtw coco

New thread as it is a different grow method. Dtw coco, fed once a day then a month later twice a day or more.

Maxi gro and bloom per phase of growth. .15 grams pool shock per 5 gallons fertilizer. Ph down. Tap water .5 EC high in cal and mag, nothing concerning last time I asked about my water results and what was in it.

That is it for feed. Coco 90 perlite 10% rinsed and double buffered. That is pretty much it, monitor ph to drift between 5.8 to 6.2.

To make most use of this thread I will leave it at that and post each plant in question when it is needed.

Plant in question, chemdog auto by auto seeds. Fed twice a day just over a week into flower I think. Too much chlorine? What are those pink/orange spots? Showed up almost over night and so asking in advance. Surprised to be here with coco but I am new to using chlorine in flower. Plant about 40 days old or so.

The fan in canopy died or still figuring out whats wrong or just replace it but is that causing the cupping or taco starting to happen? Is the light burning the leaves causing the spots? Its a hot running light but almost time to dim it as plant is over its height limit already (intentionally) . EC is .9 in veg and now 1.2 flower.

The spots are necrosis, i.e. dead spots.
It's a stereotypical Calcium deficiency; whether it's lacking or simply unavailable is for you to figure out.
It's unrelated to Chlorine.

The very first few comments by me say everything that is in the tap water for the most part. The very first page, the rest is junk.

Shoot, I had issues adding calmag before causing lock out. I just upped the ec to 1.2 like a week ago. Only other option I can think of is try feeding more times a day.

Open to suggestions. I never solved problems in coco, I just simply had bigger problems or none at all. New to growing though still. I solved a micro nute def by feeding more times a day but thats it.

Only other thing can think of is the solution isnt stirred as it sits which heard some nutes can bind and lock out.

Some leafs are getting pretty dark. 1.2 EC. Thinking I need to drop it. About to set timer to run 4 times a day to see if that helps the calcium deficiency. My other plants are doing just fine but then again flower is when things come out.

Can poor water distribution cause any of this? The halo is poorly made. Think I am going to make the next batch 1.0 EC. Its not drying back really between waterings but I guess that is a harmless way of trying to help.

it's definitely calcium, probably being sucked up by the coco. you can try adding more calcium to compensate, although the old leaves will stay damaged.

don't go the dryback route. keep it wet at all times (pain in the ass but thats coco). if it gets too dry the EC will spike and everything dries up and dies. you can choose to water less frequently and have EC spikes that are manageable (although suboptimal for growth), but you would need a low baseline EC in order to maintain. only do this if you absolutely cannot water frequently, and also plan on switching to peat to give you some breathing room in the future if you do decide to water less frequently.

Your tap water is 0.5ec
Your EC is 0.9 then up to 1.2..
Are you talking total EC including the tap or in addition to the tap?

coreywebster said:

Your tap water is 0.5ec
Your EC is 0.9 then up to 1.2..
Are you talking total EC including the tap or in addition to the tap?

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Total with tap.

Greenman68 said:

it's definitely calcium, probably being sucked up by the coco. you can try adding more calcium to compensate, although the old leaves will stay damaged.

don't go the dryback route. keep it wet at all times (pain in the ass but thats coco). if it gets too dry the EC will spike and everything dries up and dies. you can choose to water less frequently and have EC spikes that are manageable (although suboptimal for growth), but you would need a low baseline EC in order to maintain. only do this if you absolutely cannot water frequently, and also plan on switching to peat to give you some breathing room in the future if you do decide to water less frequently.

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I can water as much as needed I just usually get some dryback to indicate another feed but so far it stays wet but figured feeding more often is a harmless first step but then today noticed leaves are pretty dark. N heavy, over fed in general.

medidedicated said:

I can water as much as needed I just usually get some dryback to indicate another feed but so far it stays wet but figured feeding more often is a harmless first step but then today noticed leaves are pretty dark. N heavy, over fed in general.

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Yes those are way too green they look like freakin maple tree leaves. The curl up or leaf praying is overfeed, as well as the leaf mutation.

I worry that tap having .5 ec and using .4 or .5 ec nutrients that it can lock out or not get enough. Tap mostly cal/mag and choloride or idk but its on the thread I linked, one of the first few comments.

Also with the stretch and mid flower, the plant using more ec and N that it would need extra nutes but some people never exceed 1.0 but their starting ec water aint as high.

Here is a pic a day later, it stretched notably. Will do a little tiny bit of defoliating soon. Also pruning, I just don’t want to stress it for a minute since I done nothing but prune and train in last few weeks.

The back right corner got bent over but that was the highest standing branch. Just moving it closer to light and sloughing it so the ufo can shine down on it.

It is high IMO in Sulfate .1ec, calmag .1ec and chloride .2ec.

Total Trihalomethanes .1 ec. Total Organic Carbon .06 Ec. chlorine .86 ppm, what ever that is on ec scale.

Turbidity .2 ec.

Sodium .06 ec

cal 30 ppm mag 35 ppm so roughly .1ec calmg.
under hardness it says 200ppm or .4ec
I dont see that specifically (caco3). Just calcium 35ppm and total organic carbon 30ppm

That is the jist from the other thread of whats in the tap water. Alot of anything to worry about is PPT or ND.

medidedicated said:

Total with tap.

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That's pretty low , considering more than half your ec is coming from your tap.

Dark leaves doesn't always mean N tox.

Copper deficiency, look it up and see if any of the other symptoms match , like how the leaves feel ect.

coreywebster said:

That's pretty low , considering more than half your ec is coming from your tap.

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What total ec would you do? I heard just dont go above 1.5ec and should be fine. I see no tip burn.

medidedicated said:

What total ec would you do? I heard just dont go above 1.5ec and should be fine. I see no tip burn.

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For me I consider myself a light feeder.
I use 1.2 in veg, 1.4 in flower , if I were to feed 1.6 I wouldn't worry , lots go higher, unnecessarily imo.

coreywebster said:

For me I consider myself a light feeder.
I use 1.2 in veg, 1.4 in flower , if I were to feed 1.6 I wouldn't worry , lots go higher, unnecessarily imo.

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Oh wow so youre saying youd keep it at 1.2 or go a little higher? About to feed it 4x a day. I heard that 1.5ec is the highest one should go for total ec but was trying to start light as its harder to fix issues once going heavy which I thought I was already in that position.

I tried mentioning the halo runs poor, 1/4th of the surface doesnt get direct water and the solution isnt being aerated or stirred as it sits.

How's the environment in that small space? My guess would be that you're just a bit into the red out for vpd, and having a fan blow on the leaves would exacerbate the situation. Too high transpiration is causing the problem is my noob assumption. If it is in fact the transpiration being too fast and you're unable to adjust the vpd then feeding it more ferts is the wrong thing to do.

medidedicated said:

Oh wow so youre saying youd keep it at 1.2 or go a little higher? About to feed it 4x a day. I heard that 1.5ec is the highest one should go for total ec but was trying to start light as its harder to fix issues once going heavy which I thought I was already in that position.

I tried mentioning the halo runs poor, 1/4th of the surface doesnt get direct water and the solution isnt being aerated or stirred as it sits.

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Just saying your 0.9ec was way low considering the starting point and the overall balance of your total nutrients .

I've not used halos , I use 4x wilma drippers per pot. They squirt water and each dripper it comes out of two sides. So there's 8 points of saturation. The coco wicks it out and providing your water enough the whole pot is saturated.

I don't aereiate either but because I'm Recirculating so I get mixing and aeration all the time.

Would of though your halos add oxygen , or you'd see everyone having problems as that delivery method.

medidedicated said:

Oh wow so youre saying youd keep it at 1.2 or go a little higher? About to feed it 4x a day. I heard that 1.5ec is the highest one should go for total ec but was trying to start light as its harder to fix issues once going heavy which I thought I was already in that position.

I tried mentioning the halo runs poor, 1/4th of the surface doesnt get direct water and the solution isnt being aerated or stirred as it sits.

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What size container, and what size halo?