What do you guys think is wrong with these?

johnnyslastwords

johnnyslastwords

Member
I've always grown hydro and a few times soil, but this is the first try at coco. It's really chapping my ass. This is 3 weeks after clones were transplanted and this is what they look like. I am using 1/2 strength nutes twice a week (although the watering yesterday was 3/4). All signs point to nute deficiency but I don't know how that's possible given the amount I have fed them. There are no bugs, I have checked very thoroughly. And the root system is surprisingly good and they are bright white, no discoloration.

-Coco/perlite medium
-canna a+b, GH biothrive and camg+
-RO water pH 6.2 (after nutes)
-18/6 cycle, 400 watt MH
-Temp 75-78 (68 @ lights off), 30% humidity
-air intake from window, circulation fans, exhaust fan


What do you think?

photo 1.jpgphoto 2.jpgphoto 3.jpgphoto 4.jpg
 
I've also just given them rhyzotonic and cannazyme per the advice of a local grow shop fella but that was yesterday so I don't think I'll see results too soon.
 
Feed every single time you water.

PH at 5.8 for optimum uptake.

Are you testing ppm or EC etc?

If so what ppm at which scale are you feeding them with?

Are you feeding every time you water?


Check my signature link for a journal using coco explaining EC testing etc.




J
 
I am feeding every time I water, about twice a week. I figured half strength would be a good start with freshly transplanted clones, but I'll try upping the dosage and pH'ing a bit lower. All the guys I've talked to at the shop say 6.0-6.3 is best for coco, and this is Colorado so they all know whats being grown and they're all doing it too... but Ill see what lowering it a bit does. My PPM is sitting at 650-700 (1.3 EC) with all the nutes I'm using, which in all my hydro grows was plenty for plants this young but this coco I guess calls for a bit more? I dunno. Hopefully they bounce back soon. I may have to go back to hydro after this grow..
 
Btw Jon, that's a great journal you got there! I noticed you usually feed at 6.1 pH - do you think I should take it down under 6 for a while and then once they get better go back up to where I'm at? I just don't want to lock anything out by going too acidic.
 
johnnyslastwords said:
Btw Jon, that's a great journal you got there! I noticed you usually feed at 6.1 pH - do you think I should take it down under 6 for a while and then once they get better go back up to where I'm at? I just don't want to lock anything out by going too acidic.
Click to expand...

I feed between 5.5-6.2 but I've grown in coco for over 4 years and I pH based on what I want the plant to have the best access to for uptake at that perticular time.

I strongly suggest you keep pH around 5.8-5.9. This way you want have any issues with uptake of Ca and Mg.

If you're feeding at EC 1.3 I would just increase your feeding frequency.


Also make sure you are getting 20% runoff each and every time you feed.




J
 
So from what I've gathered it's very hard to overwater coco...and I've been waiting a few days every watering because I'm used to soil, should I just start feeding them every other day even though the pots are still pretty wet? Thanks for the help man, I really appreciate it. They have already started to look better, I just don't want to water-stress them.
 
johnnyslastwords said:
So from what I've gathered it's very hard to overwater coco...and I've been waiting a few days every watering because I'm used to soil, should I just start feeding them every other day even though the pots are still pretty wet? Thanks for the help man, I really appreciate it. They have already started to look better, I just don't want to water-stress them.
Click to expand...


I wait until the top looks dry and crumbly.

Still plenty of moisture underneath.

If you allow coco to get too dry it can cause pH issues.

Its very difficult to over water coco. Not impossible though.

I feed once every other day during flowering.

Until then its probably around once every 2-3 days when that top surface looks dry.



J
 
Why did you decide to grow in coco if you weren't that knowlegable about it?
You grew in dirt in the past with success so why go to coco?
if it aint broke don't fix it.
Peace
 
big bud 56 said:
Why did you decide to grow in coco if you weren't that knowlegable about it?
You grew in dirt in the past with success so why go to coco?
if it aint broke don't fix it.
Peace
Click to expand...

What, you've never tried something new before? Just expanding my abilities, that's all. My next endeavor will be aeroponics, once I decide on the right setup.
 
well it seems to me that you haven't got your coco grow right so what makes you think that your aeroponics grow is going to go right?
I'm just saying.
If you want to waste your time and money go for it.
Do you want buds or are you just interested in trying new things?
I was growing in hydro.
I didn't really care to much for it,too much of a hassle,very time consuming and you alweays have to measure ppm's.
I grow in dirt now and have been doing so for the past two years.
I've had no prioblems whatsoever and have never checked ppm's.
Good luck man,you're going to need it.
 
Here are the plants 4 days after lowering my pH and using the rhyzotonic

photo 1.jpgphoto 2.jpgphoto 3.jpgphoto 4.jpg

They're still not looking green enough...I didn't want to overdo it on the nutes right away... but I have lots of new growth and tomorrow when I water again I'll up the nutes to 1.6 EC

Thanks Jon for the actual advice and not criticizing me for trying something new.
 
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