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six, Many people use grow nutes up until stretch is over...but that's unrelated. Doesn't look like light burn...so you're OK there. My guess is you gave too much and caused a little burning...though it does look a little like Mg def. What bloom nutes and how high a dose? JD

Better pictures under white light would help. You say all of this has happened in three days? What all, other then the timer, did you change when you went into bloom mode. JD

Turned 70 this year...still puffin' JD

Well Supernova...I say ignore the numbers. Clearly something is wonkky with your measurement. You can't add 200ppm to runoff and get 85 out the bottom. Carry on and don't bother testing runoff. JD

SN...runoff figures are only pertinent when compared to what was going in. So now I have to ask...what were you putting in to get that ppm and what was the ppm of that? JD

So what was the ppm?

JSB, Nice plant. Growing outside, there's no sudden shift of light timing...so it'll just look like normal growth rather then having it all compressed into a couple weeks. It's gonna get taller. JD

If it were coco or soil-less I'd def say flush...but soil is differeny. That's your call...I have no opinion (based on not enough knowledge of your grow) OK on Mg...follow Harley's advice and do foliar if you really are convinced you need more. I think what you are giving is enough...

Matt, Nobody commented on the tip burn. Is that from something that happened in the past and was corrected...or are you still feeding real high? I would not increase Epsom salts right now. Might be a lockout and you could make it worse. Mg symptoms aren't that bad. Certainly 1 tsp/gal...

No I wouldn't worry about that. Water treatment makes it sanitary but doesn't change EC. My guess is that with increased rain...more water is passing through limestone .. picking up some Ca, and then to aquifer...thus raising ph. JD

I wish our water was that stable. I live in a very rainy area and our tap goes from around 7.5 in the winter...to now in summer, close to 6.5. First time I ever I needed ph up. So I measure occasionally. JD

I'm running a pure sativa with 14 week flowering time. Sure not going to harvest early due to your advice. Better overall advice (for those without a microscope)...when 90% of pistils turn...wait two weeks and then harvest. JD

Cool...got the link fixed. I saw you are struggling with summer heat. Move to the coast of Washington and you can sell your AC. We have had 2 warm days this summer...so far. JD

That comment about contaminated seeds reminds me of Chimera's old seed procedure. All he does different is to wash and scrub the seeds about 10 times before planting. So ya...try cleaning them before planting...I guess next time. JD

I wanted to mention that you should never give pure water (and especially RO)...always add something like 1/4 strength nutes or calmag. Pure water tends to wash out the calmag buffering. You a first time coco grower? I'm in coco...3 gal fabric pors and am currently watering daily with...

Same here on Washington coast. I figured it was somehow related to the winter rainfall...which is plentyful. Question for anyone. I tried Hanna storage solution and it spawns white crystals that grow all the way to the outside. Mabe a bad bottle? Comments? JD

While I was learning manifold training...it became obvious that it would be perfect for scroggong. Now I've seen proof! Great job Purps and thanks for the pix... JD

Zypher, I'll have to check out your blog...been thinking abot starting one myself. Glad you're here...hope you feel welcome. 8) Cheers, JD

Hi Guys, I had a package of litmus strips go bad from sitting around in a humid environment...so switched to the dropper bottles which are immune to storage issues. I actually have a hanna ph meter and if I clean and calibrate occasionally...I seem to get solid readings. If I get a wonky...

Hi Frank, Not an auto guy...but like Hempire said...there's gonna be recovery time and it may mess with the plants internal clock. I currently have a pure sativa that won't kick in to stretch mode after manifold training. I raised it up to get better light and was thinking maybe, it being a 14...