growsince79
- Posts
- 9,063
- Reactions
- 15,609
- Joined
- Apr 2, 2020
- Points
- 313
Organic and chemicals measure different. Kinda like comparing kilometers and miles.
Organic and chemicals measure different. Kinda like comparing kilometers and miles.You indoor worriers keep dem PPMs low!!! For me? i dont usually rock a PPM check i just use organic recipes, but my AACT comes out 800-1000 PPM with just some good ol homemade worm castings and molasses. I have fed as high as 1500 PPM with no burning. But i grow outside in dirt thats bigger than ye average tent. I dont understand why such little food during veg? I like to grow em till they are hungry, usually about a foot tall in three gal pots and then start with 100 PPMs of fish, bumping it up by 50-100 weekly. That chart is seemingly for indoors, because i do 5 months veg and by the end of it they are eating 1000 PPM easily....I like to keep bumping it up until your riding the ragged line of almost too much, get a lil burnt tip and keep it there for a week then bump again. I also do that with my top dressings, i was putting TWO soup bowls of dry amendments weekly on em! I just watched a Advanced Nuts video with some outdoor 12ft plants and the dudes were saying that they lay it on in excess of 2000PPM. Outdoor growing, huge plants and huge dirt can take a lot more nutes, big plants eat more, huge soil bases create a buffer and living soil transfers nutrition thru the living soil food web.
+1.Organic and chemicals measure different. Kinda like comparing kilometers and miles.
Are you talking 700 or 500 scale?Found this list on growace.com:
- Seedlings: 100-250 (nutrients aren't needed here, hence there's not a lot of particles needed)
- First Half of Vegging Cycle: 300-400 (this is usually after you transplant, which still doesn't require many nutrients)
- Second Half of Vegging: 450-700 (you'll start giving your plants more nutrients at this stage)
- First Half of Flowering: 750-950 (your plants will be eating more as they grow, so they'll be taking in more nutrients)
- Second Half of Flowering: 1000-1600 (this is when your plant's eating the most, especially if you give it additives)
- End of Flower, Entering Harvest: As close to 0 as possible (this is when you'll be flushing your plants, so you don't want there to be a lot of particles leftover)
Would love to hear feedback from others here on these guidelines.
I'm suspect I knee-capped my last grow by overfeeding them; my PPM was in the 1500s in early veg. This round I am going to be more conservative and intend to use this guide unless feedback convinces me otherwise.
OK I found your chart from growace. Its 700 scale. Makes sense now.Are you talking 700 or 500 scale?
Hmm, I'm glad you asked this because my meter is TDS, which should be 500. Time to do more homework.OK I found your chart from growace. Its 700 scale. Makes sense now.
There are 3 scales for ppm.Hmm, I'm glad you asked this because my meter is TDS, which should be 500. Time to do more homework.
Whats the 3rd?There are 3 scales for ppm.
Ime im sure it was the mineral contents in my compost and WC that drove it up...Why would my compost tea be so different? Would it be the content of many different things beyond N? Do the millions of bacteria read on the PPMs? Or Fish Hydrolysate, thats what i mainly use for N and watch those PPMs but fish is rather readily avail, almost as quick as ammonium nitrate. Is it because the organic nutes need to be broken down and digested and turned into the same salts your applying?
Also outside with large plants is there rules of thumb like the PPM scale chart you have found, or would you apply the same PPMs to outdoor trees?
.50, .64, and .70Whats the 3rd?
0.5, 0.64, 0.7Whats the 3rd?
All ppm meters are EC meters they all measure EC and convert to ppmWhy not just get an EC meter and be done with it?
Read here. It explains why ppm is not really a good option for organics to much other stuff dissolved that the meter pics up. Like I say well over 2000ppm is often o issue with organics but can be dependent on the makeup of the ppm.Why would my compost tea be so different? Would it be the content of many different things beyond N? Do the millions of bacteria read on the PPMs? Or Fish Hydrolysate, thats what i mainly use for N and watch those PPMs but fish is rather readily avail, almost as quick as ammonium nitrate. Is it because the organic nutes need to be broken down and digested and turned into the same salts your applying?
Also outside with large plants is there rules of thumb like the PPM scale chart you have found, or would you apply the same PPMs to outdoor trees?
The light just popped on. TDS meters are 0.5, so the PPM reading will always just be 1/2 of the us/cm EC reading. Yes??On EC, my meter reads 500us/cm. Is this too low?
(https://smile.amazon.com/gp/product/B073713G5F/ref=ppx_yo_dt_b_asin_title_o09_s00?ie=UTF8&psc=1)
Thats 250ppm on the 500 scale which most use.On EC, my meter reads 500us/cm. Is this too low?
(https://smile.amazon.com/gp/product/B073713G5F/ref=ppx_yo_dt_b_asin_title_o09_s00?ie=UTF8&psc=1)
Yes.The light just popped on. TDS meters are 0.5, so the PPM reading will always just be 1/2 of the us/cm EC reading. Yes??
You indoor worriers keep dem PPMs low!!! For me? i dont usually rock a PPM check i just use organic recipes, but my AACT comes out 800-1000 PPM with just some good ol homemade worm castings and molasses. I have fed as high as 1500 PPM with no burning. But i grow outside in dirt thats bigger than ye average tent. I dont understand why such little food during veg? I like to grow em till they are hungry, usually about a foot tall in three gal pots and then start with 100 PPMs of fish, bumping it up by 50-100 weekly. That chart is seemingly for indoors, because i do 5 months veg and by the end of it they are eating 1000 PPM easily....I like to keep bumping it up until your riding the ragged line of almost too much, get a lil burnt tip and keep it there for a week then bump again. I also do that with my top dressings, i was putting TWO soup bowls of dry amendments weekly on em! I just watched a Advanced Nuts video with some outdoor 12ft plants and the dudes were saying that they lay it on in excess of 2000PPM. Outdoor growing, huge plants and huge dirt can take a lot more nutes, big plants eat more, huge soil bases create a buffer and living soil transfers nutrition thru the living soil food web.
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?