converted to coco. rooted clones transplanted.advice needed

Friends.
IV been put on to coco for something different then rdwc

I'm running a pot in a pot 55 litre in house and garden coco coir

Strain is unknown at the present but I believe it's either a critical kush or cookies type strain.
Please don't flame me on that claim
I realize it's mostly clone only And living outside north America I don't have THE cut
It's just something very similar that's been circulating in aus

Now I received the cuts with a bit of deficiency I believe it's either nitrogen or Magnese

Never grown in coco before so I transplanted and gave it 24 hours before I gave them a feed of light nutes in 2.5 litres of water

Basic 1m/l a+b house and garden coco and some cyco ryzofuel at 1m/l

It's been 3 days and the coco was only just moist at 6-7 inches deep

So today iv fed again doubling the feed to 2ml/l a+b and left the root tonic the same in 6 litres of water

This time I achieved a little run off
Forgive me but this is a massive learning curve

How long should I be waiting between feeds ?

& how much should I be giving them given the size of the plant and the container..

Will post pics with lights off so you can try and help sort this deficiency

Thanks guys

I run h&g in coco i start my clones with 3ml/gal. And by week 3 of veg is up to 6ml/gal. I feed every time i water, i water till there is some runoff and wait till the pots are sy to water again like i would in soil usally about 4 days. That is in large pots with big plants. You can get good results with small pots and multiple waterings per day to with an automated system. I start to up my nuets in flower if needed but usally max around 8ml/gal

If you plants are still light green to yellowish, try adding 5ml/gal cal-mag, that's my baseline for growing in coco

Hey guys. I am quite sure it was nitrogen. Had vertical purple stripes up the stem and purple leaf stem...I've upped my dosage to 2.75ml per litre of h+g a - b
1ml per litre of ryzofuel by cyco

3-4 days between waters at this stage just because of the size of the girls in the containers at the present. One was always a fraction larger then the other cut and it's responded well to the new dosage and has taken on so early I was convinced to try something new and do some lst... and admittedly it felt all sorts of good to dominate this little girl and start to train that nutrient highway.... anyhow I'm off on a tangent... will upload pics soon

Kannah