Day 14 poorly autoflower, could really use some advice!

[omegaty 10]

hello guys, this is my first time growing in coco and my first time I have actually needed help with an autoflower!

So to start off I been using the following:

marshydro ts1000 34" away from the plant.

2 6" clip on fans

2 4" extractors for intake and outtake

humidifier and controller set to 45% humidity now lowered it to 40%

temp controller and a heater been keeping the temps at 28c but at day 7 when I saw the plants looking like that lowered it to 26c

Canna A & B

Rhizotonic

CalMag Vitalink

 

to start I fed nothing but ph balanced tap water (5.8-6.0) for the first few days of the plants being in the coco. once they both had their first true leaves I gave them a batch of 10ml/gallon rhizotonic ph to 5.9 didnt use the whole lot only fed them 500ml at a time. at day 7 I fed them another 500ml of the rhizotonic mix and then just fed them ph tap water (5.8-6.0) up until day 12 where they started to look like this. I got a little concerned about them as they started to look unhealthy so I whipped up a batch the night before of 2ml calmag, 10ml rhizotonic, 2ml canna a, 2ml canna b ph at 6.1 thinking maybe this might fix it but since then the purple and the yellowing has got worse.

I have been feeding once every other day but now I have read from someone else on another forum saying I should be feeding every day?

I am just so confused so I found the canna chart and it says to mix 16ml per 7ltrs a and b so should I whip up a batch of 4ml a and b with 6ml rhizotonic? it doesn't feel like I am over-watering I have been making sure the coco has been drying out at least an inch below the coco.

 

The image on the left is the auto gelato and the one on the right is auto blueberry

the left pictures do not do the purpling justice but there is a lot of purple on the new growth in the centre of the plant and purple and brown spots all over the yellowing of the leaves and its starting to work its way up the plant. left picture is from day 10 and day 14 right picture plant is showing slight purpling on new growth and same with the yellowing no visible spots yet. the pictures on the right are of day 9 and day 14

also forgot to say the plant on the left is auto gelato and the plant on the right is blueberry auto

better images

Edited April 16, 2020 by omegaty

[ursus1000 1,888]

12 hours ago, omegaty said:

to start I fed nothing but ph balanced tap water (5.8-6.0) for the first few days of the plants being in the coco.

coco is inert.There is no nutrients in it,you need to feed from the off. There are plenty of baby/starter feeds available,I use Ionic/Growth Technology 'formulex'. The yellowing of leaves is because they need feeding. Try an EC of 0.8 ish ( an ec meter is essential in coco). your ph is fine.

[omegaty 10]

1 hour ago, ursus1000 said:

coco is inert.There is no nutrients in it,you need to feed from the off. There are plenty of baby/starter feeds available,I use Ionic/Growth Technology 'formulex'. The yellowing of leaves is because they need feeding. Try an EC of 0.8 ish ( an ec meter is essential in coco). your ph is fine.

awesome info thank you very much, thats where I was going wrong in soil I fed literally next to no nutrients just rain and tap water. very new to this hydroponics generation. one last question am I right in thinking I should only be feeding my plants nutes once a week and phd water the rest of the week? or is it 1 day water 1 day nutes and repeat? many thanks!

[Rufus Brown 2,816]

It's feed every time you water 

[omegaty 10]

30 minutes ago, Rufus Brown said:

It's feed every time you water 

thats nuts I didnt have a clue I was so scared that if I fed nutes every day it would kill the plant! thanks for the support!

[ursus1000 1,888]

feed every time,except when you need to flush,ie,when you need to correct a toxicity,or a few days before cropping/harvesting.ATB with your grow

[omegaty 10]

23 minutes ago, ursus1000 said:

feed every time,except when you need to flush,ie,when you need to correct a toxicity,or a few days before cropping/harvesting.ATB with your grow

awesome info and straight to the answer! thanks for your help both of you, will keep you updated and let you know how my babies are getting on. good news is since I gave it 4ml of each a and b yesterday the new growth is looking great! good luck lads! ty

[omegaty 10]

On 18/04/2020 at 8:05 AM, ursus1000 said:

feed every time,except when you need to flush,ie,when you need to correct a toxicity,or a few days before cropping/harvesting.ATB with your grow

you are a diamond. my babies are looking green and growing sharp again. ec meter arrived today. tested the water I used after you told me to get an ec meter and somehow managed to get it to about 0.9ish. shall I try and lower it to around 0.8 after I finish this res tomorrow or should I move to 1.0 ec? many thanks, T

[ursus1000 1,888]

On 19/04/2020 at 8:45 PM, omegaty said:

shall I try and lower it to around 0.8 after I finish this res tomorrow or should I move to 1.0 ec?

Sorry for the late reply. I wouldn't worry about it. EC 1 is fine. Max ec in veg in coco for me would be approx 1.2. In flower I don't tend to go over 1.6 ish.