Seedling sickness

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Hi Ive got 3 auto cherry bombs and 1 northern auto and they are a really light colour in the middles the cherry bombs are about 3 days old and the northern auto is about 7 days old I'm using a 50/50 mix of canna coco and perlite, I use a 2200ml or 2.2 litre container to mix my nutes of which I use 1.5 ml of canna coco A and 1.5 ml of canna coco B and also 1.5ml of canna cal mag. I use a ph tester and ppm tester and my ph is 5.8 with a ppm reading of around 420-425. So what I'd like to know is am I using too much or too little nutes? I will add photos of each plant in the next hour.
 
Ppms sound a little high for 3 day old plants man- i wouldve thought about 200ppm maybe 300 max at that age.
Im no expert though maybe someone else will say different
 
Ppms sound a little high for 3 day old plants man- i wouldve thought about 200ppm maybe 300 max at that age.
Im no expert though maybe someone else will say different
I was reading the coco forum on here and people was recommending 600ppm from the start as canna coco has no nutritients or anything in it but I didn't want to go that high so started slow with the feeding
 
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@smokersuniteuk420 going by your pictures everything looks fine to me mate.
That light green in the centre is normal for new growth- esp when its growing fast.
It'll darken down soon- i would keep doing what your doing
 
@smokersuniteuk420 going by your pictures everything looks fine to me mate.
That light green in the centre is normal for new growth- esp when its growing fast.
It'll darken down soon- i would keep doing what your doing
Thanks for that it's really took a weight off my shoulder, I just got worried as they was much darker before I watered them yesterday. Thanks for the input I'm glad they're healthy
 
This is just a guideline that I use for dilutions at different stages of growth. Plants can vary greatly in how much nutes they require and tolerate, hence the ranges. The plant will tell you, if she is yellowish, up the ppm. If she is really dark green with leaf tips curling down and scorching, back off the ppm. If I am growing a strain I have never grown before, I start at 300 ppm and slowly work up.


Seedling 300-600 ppm
Veg 600-800 ppm
Flower 800-1200 pp
 
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