When do I start GH trios

My seedlings are 3 weeks old and the Cotyledons are still super green. They have 3 nodes. I’m using coco coir and perlite premix with no buffers Should I start feeding?

2-1/2 weeks ago.
PIcs?

Personally I don't feed until they are about 8" tall. I like to see them starting to grow before feeding them.

70's natureboy said:

Personally I don't feed until they are about 8" tall. I like to see them starting to grow before feeding them.

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Do you grow in coco?

MickFoster said:

Do you grow in coco?

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Hey thanks mike on my threads your insight was much needed

MickFoster said:

Do you grow in coco?

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Uh, no, I must have been half asleep because I usually don't respond to coco threads. sorry guys, disregard my post