Starting to panic on this one few problems in coco

[MrMackey]

I’ll put in as much info as I can. I’m currently day 30 of 12/12 the problems are bright yellowing between veins on the newest growth to about a 3rd of the way down the plant, slow growth, lots of small leaves produced, I’ve had very red purple stems that feel woody (this has improved a bit in the last 2 weeks) the yellowing of leaves has got worse I’ll out pics up 4 days apart. Some plants are much worse than others, I’m growing in alien easy feed bottom fed system watering daily with ionic coco bloom to 1.8ec, supervit, Buddha tree pk0.5ml per l, magne cal at 1ml per l, total ec inc tap water is 2.1 and ph is 5.8 the lights are 1000w gavita co2 Ppms 800 day temps are 25-27c night 19-21c humidity I’m struggling with it’s been 60-85%! I have fungus gnats which I just treated with sticky traps a week ago and tanlin yesterday when I also flushed the plants with 1.0 ec diluted feed 5.8 ph the run off was on average 2.6ec 6.3 ph. Something else to add is 1 section of this room is doing almost perfectly fine lovely colour in the leaves stems only have slight purple stripes compared to the rest of the room (same everything including strain) any help is greatly appreciated

 

[Old Salt]

It looks like a magnesium deficiency. I'd increase the magne cal , or add some Epsom salts to the mix.

 

[MrMackey]

It looks like a magnesium deficiency. I'd increase the magne cal , or add some Epsom salts to the mix.

Thanks pal I did think this but also read magnesium starts at the bottom? What would you bump it up to? And with Epsom salts are they foilar fed? Thanks for the fast reply

 

[MrMackey]

Couple more pics are clearer with lights off can see the difference in the better half to the worse half of the room that’s the bit I really can’t get my head around

 

[Ganjagrandaddy]

stop the pk !! is the buddha tree a booster too ??
looks like "hot mix" on those tips . how long u been using the pk ????

 

[MrMackey]

stop the pk !! is the buddha tree a booster too ??
looks like "hot mix" on those tips . how long u been using the pk ????

Hi, it’s the buddahs tree pk started using it about week 3 at low dose because I’m pretty sure I had phosphorus def blotchy lower leaves and purple stalks and leaf stems and that went away but Yh I see the burnt tips that come up about a week ago hence the 1.0ec flush yesterday, I’ve knocked up a fresh tank today following cultivators feed schedule total ec was 1.9 inc tap water and ph 5.7 do you think that’s too strong?

 

[Ganjagrandaddy]

the ph is in range but 1.9 for young plants is probably abit strong too.. i have a gh nutes schedule that icemann420 have me that saved my whole grow. It is ready to go and does not need to be halved or cut back. It is actual usage. ppm is about 550 at normal veg stage . I had high ec , ppm and could not get my grow going right at all , i followed this schedule and advice and now i have a monster crop ahead ( please come take a peak at " Barneys farm bonanza" in my signiture for proof of its validity.

 

[MrMackey]

the ph is in range but 1.9 for young plants is probably abit strong too.. i have a gh nutes schedule that icemann420 have me that saved my whole grow. It is ready to go and does not need to be halved or cut back. It is actual usage. ppm is about 550 at normal veg stage . I had high ec , ppm and could not get my grow going right at all , i followed this schedule and advice and now i have a monster crop ahead ( please come take a peak at " Barneys farm bonanza" in my signiture for proof of its validity.

Thanks mate I’ll check out your link now! Plants aren’t that young mate there on week 5 of 12/12 now I’ve just been looking and think it could be light stress! There under 1000w gavita de lights which are 3ft away I started the lights on 750w (coming from 600w mh in veg) and increased abit every few days but upped to 1000w from 850w in 1hit due to opticlimate issues (was told I needed lights running full) I hope at least it’s light burn no doubt I’ve done some crazy shit with the feed now thinking it was defeincey related

 

[Ganjagrandaddy]

would make sense too. cmh is a lot of light output.