Black Leaves

[EMP]

well my plants have been budding for a couple of weeks now and the other day i noticed a good majority of the leaves around the buds were starting to blacken.

 

 

i dunno if its normal or not, can i get an opinion please.

 

its not bugs or anything.

[F420]

check the middle of your buds for furry white shit.

 

What is your PH and has it been like that fairly constantly?

[EMP]

yes there is white fury/crystal looking stuff, i just thought that was a part of the plants growing stage.

 

is it bad?

 

my tap waters ph level is pritty decent so ive just been watering with that so its been pritty consistant.

[F420]

hmm its more of a grey really than a true white??

 

my tap waters ph level is pritty decent so ive just been watering with that so its been pritty consistant.

Normally Tap water is too high PH for feeding direct to the plants.

its normally around 7.0 and you want 5.8-6.3.

 

but I dont think PH is your problem, what ventilation setup have you got?

Edited September 5, 2004 by Ferengi420

[EMP]

pritty sure i got a decent ventilation system. not just handing it off but if you wana see my whole setup just check my grow thread http://cannabis.community.forums.ozstoners...?showtopic=7029

 

shows the ventilation.

 

reckon it could be a humidity problem?

[Luke Skywalker]

If the air in the GR isn't moving around enough and the humidity levels are consistently above about 80%, you're going to have problems....

 

Just looking at your grow thread now... and I couldn't see much about your ventilation? Could you outline how you move air out of the growing space and keep cool, fresh air coming in? And do you have a fan inside which oscillates or at least blows directly over or through the canopy? You need to have a lot of "wind" generated, as well as keeping the air inside the room regularly replaced to prevent any mould from attacking the plants.

 

If you're foliar feeding or spraying the plants this won't help either, but I don't think you're doing that.

 

So it's either bad ventilation/air movement, or it's a serious nutrient burn problem. As you're in soil, I'd say stop any excess fertilsing immediately, keep the temps down and flush out the excess nutrients from the plants. That's only if it's not just a mould problem.

 

Pull apart a bud, have a look inside and then take a pic if you can. A magnifying glass will let you get half decent macros with a bit of effort. If there's any mould or fluffy strands of fungus in there you're going to have a serious problem.

 

Hope you can fix things up mate, and if it is a big prob, don't beat yourself up about it. We've all had to kill a crop at one stage to learn how to avoid problems.

 

Hope that helps.

[racked]

Have you got a thermometer that measures humidity? These things are a must.

Ive got excellant ventilation so i assumed that because my temps never go above 25c that everything was fine.

 

I was wrong.

 

I found moisture had been building up on leaves and forming droplets while the lights were off , if i hadnt been checking on the plants as the lights came on i would never have noticed it as it was drying up within 30 mins.

[Luke Skywalker]

A prime example of why good ventilation and good information are important.

[Chev]

Yup, I can't stress enough to people the importance of decent ventilation, and air movement in the GR. Humidity has to be controlled, as a couple of others here have pointed out

Mould can be a bastard once it starts in on your buds, and it sounds to me like that's your problem.

I also hope you can fix things up, goodluck with it!

[F420]

mould has hit me twice, the first time it was only when I harvested I found the mould. the buds were too big, like 2 litre cocke bottles. Sounds good but all the buds centres were fucked, cost me around 4 Ozs of rubbish.

2nd time I got it early and reversed it .