Ppm and ph

Hey riu I have a few questions I watered my plant Monday with PhD water and my run off was 757 ph 6.4 my soil is pro mix organics and ewc and some happy frog 7-4-5 today when I watered and checked run off it was 557 and ph was 5.9 and also I’m day 3 of 12/12 my question is should I introduce a small amount of some bloom nutes like some dr earth flower girl

Testing the EC of organic soil runoff doesn't tell you anything regarding nutrient levels as it would with hydro. Organic soil will contain a lot of non-nutrient solubles that are also electrically conductive. Also what washes out the bottom of your pot isn't representative of the available nutrients, particularly if you have good soil with a high CEC. EC of runoff also doesn't tell you anything about the amount of nutrients that are still locked up but will be released through cycling tomorrow.

The only way to accurately determine the available and potentially available nutrients in your soil is with a soil test.

Don’t water to run off using organics. Your just washing away your microbes and food.
If you want to know the state of your soil then do a soil test with a home test kit.
Don’t worry about ph of your water, your soil will buffer it as long as the pro mix has enough lime

KootenayDIY said:

Don’t water to run off using organics. Your just washing away your microbes and food.

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I agree, but I do a slow "flush" of sorts between grow cycles where I get a few gallons of run off from my 150 gallon indoor pot. Mostly this is just for monitoring, and it can't hurt flushing any soluble excess buildup of whatever's hidden at the bottom of my pot. I smell the first bit of water that runs off, ensuring that I'm still aerobic all the way to the bottom. Soil in nature is continually washed by rain water from above, and at least some of this water washes all the way down to the water table far below and out of the reach of the rhizosphere. Keep in mind that in organic and in nature, the bulk of the plant food is still locked in complex molecules that aren't water soluble, or are held in microorganisms waiting for exudate sugar from a plant root to exchange its saved goodies for the tasty reward. As far as readily available nutrients in an organic grow, luckily we aim for the highest CEC (caption exchange capacity) in building our soils. This will increase the nutrient holding capacity of soil that even a river couldn't wash away.

Thanks everyone

If you don't add your bloom nutrients now, I would personally make sure you do by week two if your mix isn't too hot already! Along with P and K, plants seem to love SOME sugars/carbs in moderation during flower. Biggest mistake I've seen during flowering is overfeeding, takes over a week to recover.

I am going with dr earth bloom line

It’s npk is 3/9/4

Using dr earth flower girl

bodhipop said:

If you don't add your bloom nutrients now, I would personally make sure you do by week two if your mix isn't too hot already! Along with P and K, plants seem to love SOME sugars/carbs in moderation during flower. Biggest mistake I've seen during flowering is overfeeding, takes over a week to recover.

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Just keep in mind that it's not the plants themselves that love the carbohydrates, but the bacteria in the soil. Plants don't take up sugar with their roots, but instead exude it out into the soil from their roots. Most green land plants put up at least 30% of their photosynthetic energy into simply giving bacteria around their roots the sugar the plants spent to much trouble to make.

Adding carbohydrates to your water won't normally hurt anything, and the bacteria not close to the roots will be happier. To much though can upset your target balance between fungi and bacterial populations in your soil, or even allow bacteria you don't want in your soil to thrive. So yes, moderation is the key.

Northwood said:

Just keep in mind that it's not the plants themselves that love the carbohydrates, but the bacteria in the soil. Plants don't take up sugar with their roots, but instead exude it out into the soil from their roots. Most green land plants put up at least 30% of their photosynthetic energy into simply giving bacteria around their roots the sugar the plants spent to much trouble to make.

Adding carbohydrates to your water won't normally hurt anything, and the bacteria not close to the roots will be happier. To much though can upset your target balance between fungi and bacterial populations in your soil, or even allow bacteria you don't want in your soil to thrive. So yes, moderation is the key.

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Thanks for clarifying!
Anything you would recommend during the flower sprint?

bodhipop said:

Thanks for clarifying!
Anything you would recommend during the flower sprint?

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Well considering in at least my style of organic I don't even feed the plants, I do nothing except keep the cat out of the grow room. Plants have evolved the ability to pick and choose what nutrients they need and how much at whatever stage of growth they're in - even what time of day in the diurnal rhythm they've established. You can try guess what your plant wants yourself as it transitions to flower like people do in hydro, but I prefer a more relaxed approach and let the plant decide for itself.

In organic growing IMO, the intensity and the spectrum of light used during flower is the most important factor. More red, lots more lumens! Hit them as hard as possible after flip without seeing negative effects. After all, you've suddenly gone from 18 hours to only 12! And do train, because light penetration is a thing indoors. You want every bud to be fully lit to at least 400 PPFD lower down the stock, and more than twice that at the top. As long as the rest of your environmental parameters like humidity and temperature are good, you will grow hard, huge, trichome covered dank colas.