Transplanting clones from jiffy to coco/perlite

I’ve got a couple clones that have rooted and I’ll be transferring them to solo cups filled with coco/perlite. The coco has been double buffered and then flushed until the EC was under 400.
Got a few questions here;
Are the cups ready to take clones now or do I need to run a feed through first?
When do I give the first feed after they are in the solo cups?
And what EC/PPM should the first week of feeds be?

I run Jacks 3-2-1 at about an ec of 1.6 during the run.
I will mix a 1/2 strength mix to use on the seedlings but as soon as they regain some vigor after the transplant, they go to full strength.
Typically, that usually ends up at about a week after transplant.

GBAUTO said:

I run Jacks 3-2-1 at about an ec of 1.6 during the run.
I will mix a 1/2 strength mix to use on the seedlings but as soon as they regain some vigor after the transplant, they go to full strength.
Typically, that usually ends up at about a week after transplant.

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My EC meter measures in 4 digits, for example the EC of my tap water is 270 and a strong feed for me is 1300. So would a 1.6 on your meter be 160 on mine or 1600?

1600-your meter reads in micro-siemens, not milli-siemens.

GBAUTO said:

1600-your meter reads in micro-siemens, not milli-siemens.

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great, thanks for the reply! The batch of nutrients that I had mixed up for my seedlings is 400 EC, is that too weak for the clones and should I mix a new batch for them?

That's 200ppm, which is pretty weak.
I start at double that amount and then ramp up.
Let the plant tell you what it needs.