leaves yellowing..curling up...plants not taking up water...help!!!

hi all,
i have about 50 plants all at the different stage of flowering, all are growing in a peat moss mix with perlite and vermiculite, i have also added some lime. I watering twice a week with tap water. Now i was feeding the a organic fertilizer called biosevla, about 25-30 ml per 10 litres and everything was fine. Then I happened to come across some hammerhead bloom enhancer and added this to my feed about 10ml per 10 litres, i also diluted 1 1/2 teaspoons of diluted cane sugar to the feed. Now the leaves on nearly all the plants are turning yellow, some tips are curling up and the plants do not seem to be sucking the water up anymore. I only started the feed with the hammerhead enhancer 2-3 weeks ago with the sugar also and have now stopped. Ihave posted some pics wich I hope are helpfull. I understand that leaves do yellow during flowering perid but since i have plants at diff stages of flowering and the water intake by the plants has slowed down I am worried that maybe I have damaged them. The PH is 6.8.HELP WOULD BE MUCH APPRECIATED!!!

 

Im not sure if there is to much wrong here.. Some plants in this stage just naturally yellow as they are headed toward death.. How long have they been in Flower> 8weeks? If 8, then they are prolly ending the cycle.. I wouldnt get to worried unless your bud sites and not responding.. From the pic they look perky.

purple spot cold be a cold burn or a nute (fert burn).. Is this a soil grow? One or a few spot on leafs in soil could be hot spot in the soil the root is picking up..

how many plants in single container?? maybe others choking..

if you dont have experience in fertilizers, you can really have some problems.
. These are high is phosphorous and potassium, and will cause a purple burn.. lacking nitrate, N, also assist in yellowing.

your not growing Azaleas..

I would halt this ferts, neutral water only for a week, give them a little N if you want the green to come back but at this point adding to much (N) will make the smoke more harsh... IDk if that helps..

 

1 plants per 10 litre pot,all soil grow, all the plants at diff stage of flowering, my biggest worry that plants not taking the water up, room temp is 20 celsius and plants getting plenty of fresh air, also i have fans to circulate air.

 

you have damaged them,, But NO WORRY. your gona be fine..

Im figuring your using HPS at this time. Can you Add Metal halide or some CLF flouros?..
this may boost them, adding some light spectrum to aid in recovery of the green and promote Chlorophyll and pull water. Make sure your drainings are loose.. If you can wiggle the soil, to help with air a bit, case they are drowning..

20C is kind chilly.. will slow water uptake a bit too.

 

nice one, good idea about light, ur right using hps, will put metal halide in and burn some natural gas to promote co2 and raise temp. tx for reply

 

Q. Did.nt think cane sugar was any good coz its bleached or processed maybe thats your problem, thought it was brown or black sugar ya used???
I'm useless at nut problems but i know nice plants when i see them and there lovely looking mothers.

 

:seeya:.. hey yeah, RocK, you know me and my cold weather experience.. heheh. If i didnt know better, Id say them plants were mine...

:cheers2:.. good luck,, I have similar problems all the time.. and i pull through.

 

Just wondered about the sugar thats all. Dont help when ya change or add new foods mid grow alway unknown territory.
Yep mj dont take kindly to getting chillie and can catch colds really easy if temp drops. Hope poster gets back on track soon would be a shame to have to harvest early mmm nice looking plants i say.

 

If they've been overfed, which might be a possibility ya might flush them, it can't hurt and might help. then after a day or 2 start feeding again at 1/4 strength building up to where they look happy again!>)

 

let your water sit out for 24-48 hours before, just as a precaution(not to be paranoid or anything) haha