New Grower Help! New to Coco.sick plant 500 ppm run off but pH 6.2 in reading at 8.0 out ?

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Hi all this is my first post
My 3 auto plants are around 3 weeks from germination
indoor
led lights 240w
growing in 3 gal fabric pots
2 are in Coco perlite on the same feed schedule 1x super skunk
1x purple punch.
1 in soil is purple punch also this is my first time using coco at all and with green planet gp3 for nutes once a day pH around 6.0 to 6.5 20%+ run off each feed

My question and the help I seek is as to why is my purp in the Coco Is seeming so sad do I need to boost nutes for her?

Normally I would think it's overwatering but apparently it's hard to do with Coco as it is suppose to stay wet

Any ideas?
Thanks in advanced

Far right plant is my concern
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Hello you can over water in coco very easy when they are very young when you have a good root ball then you can water to run off and you should be aiming for around PH 6.1 in veg and 6.3 in flower in coco it look's over watered to me and what coco you using has it been bufferd
 
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Im a bit of a noob, the discoloration and the overall colour looks odd to me, id say lack of water and underfeeding, or maybe even environmental issue's, coco needs fed and watered prettey much everyday, one of those pots looks like it hasnt been watered in forever.
The overall look though, the pasty bluey green and the leaves in general i dunno, mind i have chillis, bad watering practice, the pots havent been getting fully soaked, left to dry out too long, the leaves look a little the same, blotchy, dry, under the weather.
Id go with bad watering practice's.
Id wait for some more experience in the room before taking that advice though.
 
Are the round circles i see jiffy pots? Or something like that that's supposed to be biodegradable? I have heard others say that if the jiffy pot doest break down fast enough your plant will become rootbound inside of it. Just a thought.
 
Hello you can over water in coco very easy when they are very young when you have a good root ball then you can water to run off and you should be aiming for around PH 6.1 in veg and 6.3 in flower in coco it look's over watered to me and what coco you using has it been bufferd
Thanks Dell boy
I slowly started watering from around the plant and out so hopefully not

Brunnings Coco brick but I did flush and buffer with Cal mag before leaving to dry and I always add 1-1.2m of Cal mag per litre each feed well green planet pro cal
 
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Im a bit of a noob, the discoloration and the overall colour looks odd to me, id say lack of water and underfeeding, or maybe even environmental issue's, coco needs fed and watered prettey much everyday, one of those pots looks like it hasnt been watered in forever.
The overall look though, the pasty bluey green and the leaves in general i dunno, mind i have chillis, bad watering practice, the pots havent been getting fully soaked, left to dry out too long, the leaves look a little the same, blotchy, dry, under the weather.
Id go with bad watering practice's.
Id wait for some more experience in the room before taking that advice though.
Thanks for your response ill continue the regular feed schedule from gp3 green planet nutrition for now untill I get some more advice

The plant on the far left is soil so I let it dry a little more on the surface and rely on the plants reaction a bit as my small amount of experience is with soil but 100% my watering practice needs some tweaking
 
Are the round circles i see jiffy pots? Or something like that that's supposed to be biodegradable? I have heard others say that if the jiffy pot doest break down fast enough your plant will become rootbound inside of it. Just a thought.
Thanks for the note Cooterjuice
hopefully not I did seperate but not remove the bottom of the jiffy pot before planting to help the roots out a little and tried to keep the pots soaked
The roots were pushing through when I transplanted
 
Thanks Dell boy
I slowly started watering from around the plant and out so hopefully not

Brunnings Coco brick but I did flush and buffer with Cal mag before leaving to dry and I always add 1-1.2m of Cal mag per litre each feed well green planet pro cal
Hello i use green planet hydro 4 part with gp3 you dont need to add calmag every feed green planet has enough in your base mix if you have a look at the ingrediants it shows you it has 6% all ready in it you will add to much by adding more and dont follow there feed chart as you will over feeed your plant i use about half what that say which seams perfect
Hope this helps
Excessive calcium uptake by a plant may lead to disturbances in ion balance, to the disadvantage of other nutrients (such as potassium and magnesium), or to changes in cytosol pH and a decrease in solubility of some ions
 
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Hello may i ask why you dont use a pre buffered coco like canna coco makes life so much easyer and you know it has been washed and buffered properly and saves a lot of guessing and headache's and you dont get ph swings
 
Hello i use green planet hydro 4 part with gp3 you dont need to add calmag every feed green planet has enough in your base mix if you have a look at the ingrediants it shows you it has 6% all ready in it you will add to much by adding more and dont follow there feed chart as you will over feeed your plant i use about half what that say which seams perfect
Hope this helps
Excessive calcium uptake by a plant may lead to disturbances in ion balance, to the disadvantage of other nutrients (such as potassium and magnesium), or to changes in cytosol pH and a decrease in solubility of some ions
I check the ppm and try to adjust the feed eg recommended ppm 550 if my last run off was over this I will feed around 300 ppm for example by diluting the solution with more water but thanks for the cal mag tip could potentially be the issue I'll cut it out and see how they go
 
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