Lol well ya know I was trying to push that Brix higher and higher guess I flew to close to the sun.
lol well now you know where her line is
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If you do it correctly then brix isn't something you can push. Once the roots are developed and all the food is in the pot then your job is to maintain, not push.
By that I mean if you put enough food into your soil and have adequate light and 5 weeks later you brix a 20, then unless your soil could have been better a 20 is probably the best you will get, so now you maintain calcium but moderately, and preventatively stop her from getting hungry.
As you now see, using dolowater can fuzzy your line fairly quickly. Overnight. So you don't have to feed dolo water again until the line starts to crisp. Once it starts to crisp, so about a week give or take, you hit it again. Never think ,"Well what if I make it even fuzzier?". If it's fuzzy but could be fuzzier, worry about it in 2 or 3 days when you check again and then adjust. At a certain point fuzzy is fuzzy enough.
Same for top dressing, although calcium is what likely made all that top dressing really available causing the nute burn, normally top dressing itself with minerals won't cause much tip burn but it will cement your soil if you use too much at once.
A small feeding once a week is better than a huge feeding once every 2 weeks.
A spike in VPD when you are running hot on calcium in a pot that has lots of food in it will force too much into the plant because the high VPD transpiration rate moves so much food laden water thru her, and the high calcium content makes it all really available. Too available. She burns.
Calcium is also electricity for the soil, so the microbes are revving really high creating tons of food. Making more food available for high VPD to cause leaf burn even faster.
If the high VPD is caused by too much light and sunburn occurs, it all compounds.
Not to sound like our parent's but.... This is why I warn everyone about calcium. This is why I harp VPD, especially the leaf temp part.
Strong calcium in your soil is fantastic, until it isn't.
VPD is what ignites it. Leaf temp is the biggest spark. Find optimal balance and brix skyrockets. Maintain that. Stay ahead of it as gently as you can and try to avoid spikes, or leave room. I love 950 PPFD. For high cal grows it's the safety line. Short bursts for a few hours to 1050 or 1100 PPFD will still burn tips, but only on the very ends like all mine got during stretch. Don't be ashamed of mild tip burn, it means your on the edge. But do back up a bit, now you know where her line is.
Her last Brix was only in the 13-14 really fuzzy line and that was about a week ago. My tester of her tells me she needs a couple more weeks.
2 weeks means senescence has or is about to start, so she won't grow much anymore but she will still ripen. She has enough leaves for that.
She's really racey and but wears off rather quick. If the burn continues into the buds I'll chop her but for now she's getting water and maybe some EWC.
If you are getting a worm farm consider growing her as long as you can until full senescence. That's when she has pulled as much from the soil as she will, and it makes better worm food than early harvest. The last 3 weeks are all about minerals. Make them mobile for next round.The worms like older weed better lol.
Her tent mate hasn't even blinked at the amount of nutes she's been still riding in the 17-20 depending on when I check her. Stacking nicely and little to no leaf consumption, I'll bet she goes until December 1st or so
They are all different. It can be pretty tricky growing different strains at the same time. Each gets it's own schedule. It sucks lol.
This is all a good thing G. Now you will back off sooner on your next grow if you see it in one plant, or all.
Really watch VPD. It's the trigger. Over 1.35 and it becomes a hair trigger. Of all the VPD numbers on the planet, I find 1.40 from the end of stretch until harvest is perfect. Above that and the quality of your photo ops will degrade.
If you see tip burn in the future then lower VPD ASAP, and start your rescue plan.
Otherwise, build your soil to put you ahead, then spend a few months maintaining that.
Fuzzy is fuzzy enough. Almost crisp and down a brix or 2 is time for more.