Can’t figure out what is up with my seedlings. First Coco grow.

da8balljunkie

da8balljunkie

Well-Known Member
Environment
2x2 with AC infinity S22@50%
Coco +10% perlite in 4L fabric pots

Day Temp 21-23c, RH 60%, VPD 1.
Night Temps 19-20, RH 70%, VPD .7

Was feeding 250ml Water every other day after lights on. Canna start 2ml/L and Canna Rhizo 4ml/L.
Feed PH 5.5, EC .6. Run off 20% PH 6.8, EC 1
 

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TCH

TCH

Well-Known Member
Did you wash and buffer your coco? I just washed and buffered my first ever brick and I washed with .6ec water and the runoff the first couple rinses was 4.1ec!! I'm no expert, but I feel like that could cause some serious issues.
 
da8balljunkie

da8balljunkie

Well-Known Member
TCH said:
Did you wash and buffer your coco? I just washed and buffered my first ever brick and I washed with .6ec water and the runoff the first couple rinses was 4.1ec!! I'm no expert, but I feel like that could cause some serious issues.
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Using Canna coco professional plus and says not to buffer. But I did run through with with a weak solution and came back with a .4ec variation.
 
da8balljunkie

da8balljunkie

Well-Known Member
bk78 said:
Ditch the canna start and start feeding with proper NPK

Up your ph to 5.8-6.0

And up your temps
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I’ll switch to AB then. But is not upping my water in going to cause my run off ph to increase even further than 6.8?
I can’t up the temps or it’ll knock my VPD out of wack
 
Highway61

Highway61

Well-Known Member
As others have said, increase temps to 27-29. Also increase the ph of your nutes to 5.8 to 6.3. And water more to dissolve whatever has precipitated inside your media which is causing your runoff to be high ec. You can water more often and more volume to sort out whatever is going on in your media. Higher humidity would be good too.
 
coreywebster

coreywebster

Well-Known Member
da8balljunkie said:
I’ll switch to AB then. But is not upping my water in going to cause my run off ph to increase even further than 6.8?
I can’t up the temps or it’ll knock my VPD out of wack
Click to expand...
It's new coco, it's fairly high in K so taking ph readings of your run off is pointless.

Reading run off ec is relevant later in life if you've got a problem.

Increase your temps and speed up growth and transpiration.
 
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