Need diagnostic on leaves!

Hello everyone!

My Cannatonic's leaves aren't looking so good. Some of them are yellowing and browning, as if there were some magnesium def, but looking on other leaves they look nute burn.

My ppm is around 500-650 and I feed each other watering.

The plant is now on her 6th week of flowering.

I use a 250 HID light, temperature of the room is at 26-28 degrees.

I checked the runoff of the water, I ph my water at 6.8, came out at 6.2 and less than 800 ppm.

What do you guys think?

Anyone?
Here's more pics :



The plant on the left is a Delahaze, on the right is my Cannatonic

over fed lockout use just water harvest soon not much can be done to late.... my 2 cents.. play guess the weight just under 1 oz total

Terry385 said:

over fed lockout use just water harvest soon not much can be done to late.... my 2 cents.. play guess the weight just under 1 oz total

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Alright, thanks for the reply!

What would be soon for you?
2 weeks max?

tomuch said:

I agree. Water only from now on. The out-water pH is good, though, if that's any consolation. Ca. 2 weeks.

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Oki, thanks!
Soil is still moist, 4-5 out of 10 on my meter, should i flush with florakleen tonight?

you on week 7 go 9 weeks up to you on flush tonight i'd wait till dried out more

Terry385 said:

you on week 7 go 9 weeks up to you on flush tonight i'd wait till dried out more

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Alright I'll wait a bit and i'll flush, i heard we need to flush 2 weeks before harvest so I should wait too much