Unknown problem HELP PLEASE!!!!

Ok I dont know what all information is needed here but I can post the answer to any questions. This is my 2nd crop and my main issue is very low yield. I have noticed that the roots are a tan color and not bright white. Also I have added a picture of a good leaf about 3 weeks in to flowering. Then at about 6 weeks in to flowering I have a lot of leafs that look like the ones in the pictures. I have Sour Diesel, Big Bud and G13. I am using General Hydroponics 3 part nutrient solution, Micro, Grow and Bloom. During flowering I have been adding the GH Liquid KoolBloom. I have been using the doses that GH recommends on the bottles. Through this entire 1st harvest I have been changing the nutrient solution every 2 weeks. About half way through I noticed the roots turn a tan or light brown color. Everything seemed to be looking good except for growth. So after the first harvest I ended up with 1oz per plant only. 2 weeks in the cloning machine, 4 weeks of vegging and 11 weeks flowering. The pics of roots are from SD that we just harvested.

I use the same nutes w/same LKB. I do modified Lucas....no grow nute.
Anyway, what's the story with your water?? Your pH?<---lots of fluctuations? Res temps? How hot you running the GH nutes? When you 'top off' do you 'add back' nute? What's the water ppm you start with??


gman

growinman said:

I use the same nutes w/same LKB. I do modified Lucas....no grow nute.
Anyway, what's the story with your water?? Your pH?<---lots of fluctuations? Res temps? How hot you running the GH nutes? When you 'top off' do you 'add back' nute? What's the water ppm you start with??


gman

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Ph has been between 5.5-6.0. Not sure on the res temp. I dont have a thermometer in it. I waould say room temp though. I did have a high temp problem for a while but that has been resolved. I top off with plain water. They grow pretty strong until about 5-6 weeks in to flowering.

hmmmmm. Same things as me.....but no probs...... was thinking maybe hard water? What's the ppm?

gman

looks like that thing is fryin

I thought the nutrients were causing it but I flushed with clean water only for 4 days at weeks 3 and 7 of flowering and the entire final week.

What type of lighting are you using? That is usually a big cause of not producing what it is suppose to!

Oh I wouldn't use the nute schedule on a bottle its not made for growing weed! You usually need to use a lot less! I would do half strength!

That is def nute burn on your leaves! You need to flush them out and start over on your nutes doing only half! I know you want more bud production but you won't have any if it all burns up.

ur roots look fine,just stained
ur leaves look like they have potassium def
look up pics of that def and u will see what i mean

MaiaPax said:

What type of lighting are you using? That is usually a big cause of not producing what it is suppose to!

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1 1000 HPS and 1 600 HPS during flowering and a 400 HPS during veg. They are doing it under both lights in the flower room though.