Yellowing and browning issues in middle of flowering

[LoveGrowingIt]

My understanding is dolomite lime really fucks with the chemistry of soil. If you NEED to use it like a tbsp or maybe even less for 30 gallon container, but might even be less than that. Dolomite does raise the PH so might be why it’s higher than you expected. I’d leave the dolomite out next time. If you need a good cal mag or sulfur cal, gypsum is a great source of calcium and sulfur, langbeinite for mag sulfur. The dolomite can be very funky for plants, th cal mag ratios are out of whack

As an organic soil grower, I use dolomite lime at 1 tbsp per gallon of soil. When, whether and how much to use all depend on the pH of the soil and the plant's nutritional needs. It does raise pH, but sometimes that's what is needed. It doesn't raise pH much above 7.0, though. It's a good source of calcium and magnesium as carbonates. Gypsum and Epsom salt are other sources of Ca and Mg, respectively, but are sulfates and the sulfur can lower pH. (Sulfur also improves flavor.) So, deciding which of these amendments to use depends on which direction the grower needs to push the pH.

There are diverse options about using dolomite lime. Some complain that it has too much Mg, but additional Mg is a good thing for growing under LED lights, which need more Mg. Another complaint is it can contain lead, so, buyer beware. Look for food-safe products. That said, dolomite lime is widely used and an effective method for raising pH and adding essential elemental nutrients.

As for dolomite i didnt know about gypum or epsom salts, but is there something i could add now to reverse a bit the condition, or keeping buffing the nutrient solution to bit lower ph levels like to 6.0 -6.2?

To lower pH of my irrigation water, I use a pH down product, which is an acid. Our tap water has been testing at a pH of 7.9, so I add a little acid to each gallon of irrigation water. My target pH is 6.5 because I use organic growing methods. When adjusting the pH of the water, the test should be done last, after all other amendments.

 

[Ninjadogma]

Finally i managed to have a new LED today, but unfortunately i will be able to set it up at night cause of work!
So it will be almost 2 days in the dark, i didnt apply any other light by now so i will keep it up like this until tonight!

As for dolomite i didnt know about gypum or epsom salts, but is there something i could add now to reverse a bit the condition, or keeping buffing the nutrient solution to bit lower ph levels like to 6.0 -6.2?

And some pics with light off
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Two days without light probably caused some stress that could take a couple days to get rhythm back, but it'll be fine.

For the pH issue you can amend with elemental sulfer or peat to push the pH down but go super easy with it. You don't want the problem bouncing the other way. Also keep in mind once you add your buffers you should back off how much you're adjusting your water down. Once it's in and you're due for a watering, set your input to 6.5 and make a note what the net result is with runoff.

 

[abrakota]

Thanks for all your support guys, two days now and my new LED light is running smoothly, its the MarsHydro FC E-1500, its a small upgrade from TS 600 that i had previously! I think my girl loves it! I cant see any issue from the dark days, or its still early, i am not sure!
So its middle of week 6 in flower, and day 60 from the start, i filled up the pot with some soil to fill the gaps that i had in the edges, and 3-4cm to fill the entire pot! Maybe this fixes a bit the dolomite issue also, but for sure it will help with watering cause previously i had some run off from the edge of the bag!
Enjoy some new photos,

 

[abrakota]

Hey guys, all seems to be good until now, and the new light works fine! No further yellowing on leaves and the buds getting fatter!
According to the photos below, what do you think? A couple of weeks to the end?

 

[Ninjadogma]

Hey guys, all seems to be good until now, and the new light works fine! No further yellowing on leaves and the buds getting fatter!
According to the photos below, what do you think? A couple of weeks to the end?

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Looks headed for some foxtailing, but big whoop. Looks dynamite. Let's just attribute it to genetics, with the light disruption only mildly contributing.

 

[abrakota]

Foxtailng... wtf, can this two days blackout cause foxtailing? Or the new light stressed her on the point starting foxtailing? But i dont think that this light can stress her so much, as i read in the internet, light could cause foxtailing if the ppfd is more than 1000, with this light is way less! All other conditions are completely the same!!
Idk, lets attribute it to genetics and wait peacefully 1-2 weeks till the end!
Its just another stressful grow chronic, nothing more than that!!

 

[Ninjadogma]

Foxtailng... wtf, can this two days blackout cause foxtailing? Or the new light stressed her on the point starting foxtailing? But i dont think that this light can stress her so much, as i read in the internet, light could cause foxtailing if the ppfd is more than 1000, with this light is way less! All other conditions are completely the same!!
Idk, lets attribute it to genetics and wait peacefully 1-2 weeks till the end!
Its just another stressful grow chronic, nothing more than that!!

Lol that's why I said just blame genetics, and foxtailing isn't inherently bad. It's bonus buds!

 

[abrakota]

Bonus buds.. i will accept that, hopefully its not fake buds
Btw in the series of nutrients that i use there is the "final part", and its for the last 2 weeks! Should i start with this one and stop micro, grow and bloom? This final part is only P-K!

 

[Ninjadogma]

Bonus buds.. i will accept that, hopefully its not fake buds
Btw in the series of nutrients that i use there is the "final part", and its for the last 2 weeks! Should i start with this one and stop micro, grow and bloom? This final part is only P-K!

Just follow the instructions to the letter that the manufacturer recommends. I don't use a dedicated system. My last couple weeks finish I have complely tapered off the regular nutrients and I keep up with molasses and seaweed until the very end. My hunch is the nute system you're following does something similar to meet the tapering demand and wind it down for the finish.

The only issue you'll probably run into with the foxtailing is it'll drive you batty deciding when you want to do your chop. The new outer growth isn't mature but inside the bud it is.