Necrosis - Please help

[vandezwaan]

Hi guys, im Van. Used to be a member but havent been on for ages and forgot my p/word so had to come back as a newby.

 

Got a problem with a few of my girls - leaf necrosis that started out as a suttle discolouration and has become bad necrosis. Neglected my ph in the way that I would bring it down to 5.7 one night and then not attend to it the next night and then the night after that it would hover around 6.7. Am on top of it now but symptoms seem to be worse. Thought it was a Calcium deficiency because of its original look and my high ph but since have added Calcium and monitored ph closely and has gotten worse. Im stumped.

 

I run Coco and perlite - mostly coco, run to waste and i cycle C02. temp never gets above 29.5 and cycles back down to 27. EC 2.2 ph 5.7. There 8 weeks into Veg and about to flip.

 

Any help much appreciated!

 

Van.

[STONEDAJ69]

Potassium def.

[Cerberus]

Why is your EC so high?

[Devilspine]

Ec definitely 2 high 4 coco in veg ,especially if temps are fairly warm

[vandezwaan]

My ph will rise from 5.8 to around 6.4 over night most of the time. Is this normal? Thinking ill set it to 5.5 now and then let it fluctuate from there. Will this be appropriate after I flip?

 

Cheers guys

[Samurai]

looks like overfeeding..with lockout is the prob

 

flush with ph adjusted water...5.8 lower ec ....

 

welcome back to OS Van ...great to see another H&G grower ..sweet sweet stuff.. all the best

[vandezwaan]

Alright so ditched my ph metre today after having issues trying to calibrate it. Going to use the old faithful drop in solution technique and match the colour. I feed 3 times during lights on at EC 2.2 - didnt think this was too much at 8 weeks?

Gonna see how it goes....

[Reverend]

With your PH and EC out of wack I would check to see what your run off is for the 2 that will give you a good indication of whats going on in the pot.

Then start flushing and I mean big time. The plants take their nutes up at 5.8, with your Ph all over the place they haven't been able to feed.

Also are you using coco specific nutes? I never go over 1.8EC for coco.

[Samurai]

umm overfeeding...with lockout...

ask for advice ..then couldnt be bothered listning..over it allready

Edited March 26, 2012 by Samurai

[vandezwaan]

Thanks for the post Reverend, yes I am using coco nutes. Sounds like good advice - ive always completely neglected my run off and definitely sounds like I need to pay more attention.Have put out a bucket to catch the waste and will report back after tonights feeds.

I actually flushed the shit out of them 3 nights ago and sprayed them with epsom salts - theyre looking amazing today - cant see any new signs of necrosis. Thinking it was a mag def then possibly.

 

PS you sound like a real champ Samurai! were all still learning on here mate...