Help please

And what's the best temp its sitting around 28.4

And wits the best water method water everyday or every other

Timmymagic87 said:

How much cal mag to a litre of water man in the shop said 1/2 ml to a litre I've been putting the half a ml in to a litre but would it help putting a it more I've bought a ph tester and up and down plants are looking better but still not growing much any ideas cheers

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I can't help much on the calmag, but the shop guys advice sounds ok... If they aren't recovering it may be that your medium has too high ph already, maybe test some runoff? Maybe consider a flush with some good ph'ed water? I would use 2-3 times the pot volume if things look bad, I toss them in the shower and let them run down the drain. At the end pull it out and grab some runoff and check it. PH lockout can be tough, it will stop your girls from eating...

Timmymagic87 said:

And what's the best temp its sitting around 28.4

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I'm in Fahrenheit country lol, but seems like I see guys saying around 24c is good?

Timmymagic87 said:

And wits the best water method water everyday or every other

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I've had very bad experiences with watering on a schedule, that's just not how they drink. I've learned how much each pot can hold now, and water just short of runoff ( ie: a 5gal pot when pretty dry will take a gallon of water very nicely). Lately I've started filling the runoff tray twice each feeding, to let it suck up some water from the bottom (flood & drain style). I find if you don't water to the point of runoff you risk drying out the very lowest roots, so this helps even out the distribution. Clearly not my tech, I took it from Mr. Tight on YouTube lol, but I like the system atm. The Easiest watering method to me is just water to the point of runoff, then lift it and make a mental note of the weight, and keep lifting it daily til it feels very light. If it seems light, but I'm not sure, I'll wait a day. I find a lot more risk in over watering than under.

I can go along with the water til runoff. Just be sure the plantpot is elevated above any drain off water.

Wot is the best light cycle on veg

And is it good to have fan on them all the time my plants seem stressed I've flushed them fed them cal mag tried super thrive and a mate said don't have fan on them all the time this is my first grow sand running out of ideas

If you're vegging to flower it's 18L/6d. I don't have a fan in the veg room but the temp in there is kept between 69-72F.

I use 20 on, 4 off. Maybe 18/6 is better idk, but I need the extra heat for late night humidity issues... I use a fan in veg 24hrs a day on low, they need movement to make the stalks strong enough to hold them big ole buds they make Also the leaves need fresh co2 constantly on their surface to "breathe" properly, stale stagnant air goes against this. I don't want to see the plants flap around or look tormented by the fan, just a light ruffle moving over the canopy.
Often signs of stress don't go away on old growth, is there new growth and what does it look like? Can you describe what signs of stress you are seeing?

My new leafs have got burnt tips and I'm only seein growth in new shoots I'm not seen any growth in height for 1 week and my ph is fine my mix is 2ml of coco a and 2ml of b 1/2ml cal mag and 2 ml of canazym so I don't feel like I'm over doing the nutes I water little but often does this sound right to you pal

And I've been doing 18/6 but turning my fan off at my dark period

Well I'm not sure, usually the burnt tips is nutes/hot soil..I don't really use any of those nutes myself. I'm wondering about that cannazym, I've only heard of using enzymes for flush at the end of flower, but again my own experience is 0..
If it was any other medium I might say back off and just feed ph'ed water for a few feeds, but I know coco has nothing in it unless you have nute buildup. Can you ppm your runoff?