Help - Rusty dead edges of leaf...

Any ideas?

7 weeks into flowering, Happy Frog Soil, pH of water going in, and soil runoff is the same . ~7 Temp is 78 on 70 off

They are also curving down. Most of the leaves have it a little bit, like this one, but the leaflets on the buds are green.

Water from the tap is abour 8.5 around here (limestone). So .75mL of acetic acid acts as my buffer to make the water pH 7.

I am not sure about humidity, its in a closet with lots of air flow (closet is 90ft^3 and i have 2x130cfm fans) in my house. I flushed 3 days ago with water and a little honey.

The plant was rootbound in a 2.25gal pot before I transplanted it into a 5gal about 5 weeks ago.

Nutrient wise, I have FF Grow Big that I used 3 times, and GH bloom nutes that I used 3 times. Once every 3rd watering at 1/2 dose. Happy frog soil is hot, so I used mainly water this grow.

This may or may not be the cause but i had similar problems a couple grows back with an o zone problem and had to rearrange the fans and it stopped spreading through the plant.

http://www.marijuana-seeds.net/Thanks-ThankYou.htm

just scroll down the page for pictures of different plant problems.

ThatGuy113 said:

This may or may not be the cause but i had similar problems a couple grows back with an o zone problem and had to rearrange the fans and it stopped spreading through the plant.

Click to expand...

Hrm. I dont know how I would have ozone?

I had pH troubles a while back, before a started pH balancing my water and my leaves got strange looking, this looks different from that. I havent given nutes in like 2 weeks