First grow, using coco, help appreciated

Okay, so i am roughly 2 weeks into my first grow, im growing 7 plants, but keeping only the best 4/5 when space becomes a problem, set up as follows

Tent: 1.2 X 1.2 X 2M buddha tent

Lighting Young plants/Seedlings: Two tube T5
Lighting: Waiting on acoustic ducting to arrive to set up the extraction, then the 600W HPS will be put on.

Extraction: 5" VK temp & speed controlled fan 355m3 p/h
Intake: 4" TT fan, roughly 100m3 p/h

Filtration Extraction: 5" Rhino Pro Carbon Filter
Filtration Intake: Ladies tights to stop dust/hairs and any other nasties being flung onto my girls.

Starting Pots: 1L air pots
Final Pots: 10L or 15L air pots, This is undecided so what do you think? 10 or 15L?

Seeds: 6x Big Bomb (Bomb Seeds) & 1x Lemon Ice (Ripper Seeds)
Medium: Coco
Nutrients: Canna Coco A & B, Canna Rhizotonic, Canna PK 13/14 + Forumlex what came free with the tent, maybe use for foliar feeding?

Circulation: 6" Clip fan for canopy level, & roughly 12" oscillating fan on the roof to give the room good circulation.

Lighting Hours: Whilst T5 is being used, lights will be 24/0, when the HPS goes on in a few days, it will change to 18/6, when i am happy with the plants i will move it to 12/12 to start flowering.

Goal: 300G, but you think its possibly to get 500G? or even 1GPW?

I am going to LST to increase Yields.

Okay, so i accidently gave them too many nutrients when i was upping there feed, i was supposed to add in another 1/4 strength to make it half strength, instead i put in 1/2 strength and went ahead and fed them last night, not sure if they took to it very well but here are some pics.

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Okay, so there is yellow blotches on the leaves, not sure what this is? doesn't look like nute burn (not that id no what it looks like) looks more like a Mag def? which could be right considering so far they have only been fed 1ml per litre of rhizotonic up until yesterday where they got 3ml per litre.

I was told the second picture below was a sign of them needing some real nutrients, like canna a&b, but i want to make sure :)

Current PH is 5.8/5.9, EC is .5 with background EC of .2

What should i do?
 

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looking good! I also have a pair of ladies tights on one of my intakes:lol:

Great aint it :)

Anyways, a box just came, it was like a tardis!

No longer than my arm, and about 6 inch wide, i open it up and out pops 10 meters of acoustic ducting! like wtf? lol
 
It is hard to tell from the pictures, but your plants might actually want more nutes.
Did you charge the coco? If you put a seed in coco it will want nutes sooner than if you put it in soil
Go with a maximum of 4 plants. I run two at a time, partly because it takes half as long to water as 4 plants.

I have a similar set up but run General Hydroponics nutes 6/9 Lucas formula with calmag and other stuff.
I use about 15ml of calmag per 4 liters of water.


a gram a watt is very difficult to achieve, especially in a tent
I do not know much about your strains, but with some lst and a bit of defoliation you could easily get 330+ grams
it will take you a while to dial it all in
I was near 400 grams my second run
 
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