Red stems

[cheese man]

Hi im on my first grow i have 3 outdoor plants all between 2.5 and 3 foot 2 are crossed with chheese nad lemon skunk and one early bud, i had a couple of problems in the veg stage so about and a half weeks ago i flushed the plant then put it into flowering a week later iv noticed that one of the plants top stems have gone red and a few of the bottom leave have turned brown and died, ive checked the p h in the sol and it was about 7.5 i know this is to high is that's whats causein it ? and does any one know wen do i start feeding? its been nearly 3 weeks without nut's

 

[Red eyed c]

I'd give them a feed mate if it's been 3 weeks since there last one, also check this link and have a look through the deficiency list,it may help http://www.autoflower.org/f7/basic-deficiencies-list-11.html also if you could post pics someone with more XP could help mate

 

[Muddy]

Your pH is causing nutrient lockout. While you do need to feed them, just feeding more won't help, you need to get your pH down below 6.5. I would recommend using some powdered sulfur. Take a look at this chart and you'll see that almost all nutrients are locked out at 7.5.

 

[stanko]

I'm with red eyed, i would give it a feed..

I dont think its a lockout if you flushed and have not feed in 3 weeks.

 

[cheese man]

tanks im after getting something to lower the ph and got some feed but will wate till tomorrow because the are goin to sleep in a half hour anyay have a few pics hear

 

[Red eyed c]

You can use a bottle of lemon juice to lower your water ph,it's a quick cheap solution..or some ph down..do you have a ph tester that would help you.also when I add my nutes to water that lowers my ph enough so keep an eye on that,you don't wanna lower it to much mate

 

[Muddy]

Lemon juice is a temporary fix. Vinegar will serve the same purpose. While it will lower the pH of the nute solution, it will not permanently lower the pH of the soil. As soon as the lemon juice or vinegar is discontinued the pH will go back up.

 

[Joe Dirt]

I don't see anything wrong with the plants, based on the pics. If they were mine, I wouldn't do anything.

 

[Red eyed c]

Yeah I should stated that muddy,good point man.. I only use lemon juice when I'm feeding straight water early on in the grow and my soil buffers quite well too iv Never had run off above 6.8. I also dont add lemon juice to my nute solution as my nutes take the ph down already.

 

[cheese man]

cheers mates