deficiency in autoflower

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bamdamhigh

Member
Hello there,

This is my second grow, and first in Coco

I have these 3 plants from Fastbuds, the 2 at the back in Autopot tray, having the same feed from the reservoir but as you can see one of them looks a bit behind with some symptoms that I don't know!

Just to mention I recently flushed both pots in autopot with 5l of ph balanced water and I put it back in autpot.
PH of runoff was 7, and EC was around 1700.
I'm feeding only ph perfect trio from advanced nutrients.


Any help would be appreciated.
 

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MickFoster

MickFoster

Well-Known Member
Are you hand feeding the one in the front? Because it looks fine.
1700 run off is extreme........probably caused by not having any run off.......salt build up big time.
Consider hand feeding to substantial run off at least once a day and never use plain water........if you have to flush use a weak nute solution.
 
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bamdamhigh

Member
The nutes solution is at 1700EC so I’m not surprised also the other plant in the autopot looks fine imo, or maybe I’m a newbie let me know?!
the third one that I’m hand feeding actually takes the same exact nutes but I hand feed it myself from same res.
 
MickFoster

MickFoster

Well-Known Member
Coco works best in a drain to waste method.
I don't think either plants in the autopots look good.......just my opinion.
There's a reason the hand watering plant looks better.
When you say the EC is 1700......do you mean the ppm's are 1700 or the EC is actually 1.7?
 
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bamdamhigh

Member
The EC is around 1.7, considering I'm using hard tap water with an EC of 0.7–0.75. I don't add CalMag to the nutrient solution, but I've noticed some pH fluctuations in the reservoir recently, which probably threw things off a bit. This didn't happen in hand fed plant because I was directly adjusting the ph before watering.
 
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MickFoster

MickFoster

Well-Known Member
I use tap water and never have to add a calmag supplement.........but that's me.
Why don't you just hand feed all three plants? It's obvious the autopot plants aren't doing as well.
 
Wastei

Wastei

Well-Known Member
AN pH perfect 3-part is pretty low in both Calcium and Magnesium, they want you to buy their Ca/Mg product. People have been using Lucas formula(GH) growing in Coco Coir forever which brings enough CA and Mg in the mix. There's also granulated one part formulas with enough Ca and Mg, Maxigrow and bloom, Jacks and MegaCrop to name a few.

I avoid AN since their formulas are very diluted.
 
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