Auto seedling stuck in time?

[swazeyswag]

Ok so I have 5 Mephisto Sour Crackles in my tent. Temp stays between 70 and 75, running a 600 hps with two 400w LEDs. Seedlings were sprouted in rapid rooters and once the taproot had grown out of the bottom they were put into 3 gallon air pots full of coco coir.

Of the 5 seedings, two of them are slowly growing into plants and putting on additional leaves. The other 3 have literally not grown at all in the last 2 weeks. They are about an inch and a half tall with cotyledons and the smallest little leaves trying to poke through.

I've grown dozens of plants this way and aside from the odd seedling falling over dead, I've never had an issue like this.

Any ideas?

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[Waira]

something is off with that coco,.. are you feeding at all? Coco is devoid, and needs additional Ca-Mg too unless it's coco specific nutes,... what pH? Should be about 6.0,... Will you be doing drain to waste, 15-20% run off each time? (you're not there yet, but soon),... or are you in a feed system of some kind? ... needs pics too,...

 

[swazeyswag]

something is off with that coco,.. are you feeding at all? Coco is devoid, and needs additional Ca-Mg too unless it's coco specific nutes,... what pH? Should be about 6.0,... Will you be doing drain to waste, 15-20% run off each time? (you're not there yet, but soon),... or are you in a feed system of some kind? ... needs pics too,...

I have fed them really well once, soaking all the Coco. I use AN sensi Coco nutes and add extra calmag. I do ph the nutrient solution to between 5.8 and 5.9. I feed until runoff.

I'll add pics later, but I just realized I need to flush that damn Coco.

Thanks for the reply!

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[swazeyswag]

I have fed them really well once, soaking all the Coco. I use AN sensi Coco nutes and add extra calmag. I do ph the nutrient solution to between 5.8 and 5.9. I feed until runoff.

I'll add pics later, but I just realized I need to flush that damn Coco.

Thanks for the reply!

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Here are the pics. They all sprouted on 4/2. Flushed with a ph'd nutrient mix today on all but one seedling.

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[Waira]

,... wait and see for several days,...

 

[swazeyswag]

After the flush the seedlings finally took off and are on their way to becoming full size plants!

I realize what I did wrong to begin with. Out of all the compressed coco bricks I have reconstituted, this was the only time I ph'd the water instead of using it straight from the tap. That probably would have been OK, but I discovered that my cheap ph meter was way out of calibration.

I have since upgraded to a self calibrating meter that came with predissolved ph solutions.

Thanka for the help!

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