Messed up, now I have N toxicity 4 weeks in to flower - can anyone help?

nmibud said:

How will you react to a real problem?There is nothing out of the ordinary with this plant,relax.Let nature take it's course,it's normal to fade as they get further along.

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Im going to be the dissenting opinion here. That plant definately has some issues and those issues are definately progressing.

I thought it didn't look to healthy.

I've just emptied the tank. Shall I run it on a new tank of 50% solution for a few days and see if that helps?

OK Guys. I've made a total school boy error.... I've just installed my bluelab pH controller. When I calibrated it and installed it, the pH was 0.4 higher than what it should be! I checked my pH pen with calibration fluid and it was 0.4 higher. I had calibrated the pen 4 months ago when I started the grow, but hadn't thought to do it again. How stupid.

So basically I was floating my pH from 5.6 - 6.3 - it was in fact going from 6.0 - 6.7. It's locked in at 5.8 now and will be until the end of the grow. Let's hope that solves the issue.

I'm also excited as I installed my chiller this morning and now my nutrient tank's temperature is a nice 19 degrees C (before it was 23)

Justin Freidman said:

I thought it didn't look to healthy.

I've just emptied the tank. Shall I run it on a new tank of 50% solution for a few days and see if that helps?

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After growing Kush for a couple years indoor... And 1yr of hydro in that mix...I had the exact same leaf curl about 5 weeks in... always tasted like berries.. and always yielded plenty.. just very fussy!

Kevin Pickford said:

After growing Kush for a couple years indoor... And 1yr of hydro in that mix...I had the exact same leaf curl about 5 weeks in... always tasted like berries.. and always yielded plenty.. just very fussy!

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Interesting! Got any pics? Do the buds look developed enough for week 5?

Justin Freidman said:

7? Really? I'm groing in hydro/clay balls. I thought 5.8 was optimal for this type of grow?

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Lol sorry didn't see that 5.6-6.3

He He, no worries.