4200ppm run off from my soil!!

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Sam1510

Well-Known Member
I watered my ladies that are in week 3 1/2 in flower that are growing in 5 gallon smart pots with FFOF soil and I tested the PH and ppm on the runoff water and I was so shocked. Most of my plants were in the 300-1000ppm range with 6.3-6.8 ph but one had 4200ppm and 6.0ph. crazy thing is the plant looked completely fine no signs of nute burns or defeciences. But I still flushed it with a good 15 gallons of clean water with a ph adjusted too 6.7 and tested the runoff after. It read 300ppm and 6.7 ph after the flush(made me feel better) I started at 800ppm during week 1 of flower and been raising it 200 ppm every feeding. Planning on hitting 1600 ppm max and tapering down from there til flush. Last feeding was at 1200ppm. Every plant looks very good so far..

All ppm readings are in the .500 scale

Did I do the right thing?
Can I feed normally on the next schedule?
What caused that to happen?(growing 6 different strains?)
Does my ppm feeding schedule sound right?

Any input would be greatly appreciated ;)
 

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dandyrandy

dandyrandy

Well-Known Member
If measuring run off ppm I would imagine all kinds of small particles would be measured not just nutrients. I never measure run off in my promix. I EC my fert from .3 to 1 depending. Then calmag then pH the water. ymmv
 
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Sam1510

Well-Known Member
But how would that explain why one of my plants had an 4200ppm on the run off compared to the others? Thats like 8.8EC which is way too high. I thought the meters only measured dissolvable solids in the water? Plus I'm using the smart pot fabric pots so the run off is getting filtered through the fabric so there isn't any dirt in the run off
dandyrandy said:
If measuring run off ppm I would imagine all kinds of small particles would be measured not just nutrients. I never measure run off in my promix. I EC my fert from .3 to 1 depending. Then calmag then pH the water. ymmv
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Dr.Nick Riviera

Well-Known Member
Sam1510 said:
But how would that explain why one of my plants had an 4200ppm on the run off compared to the others? Thats like 8.8EC which is way too high. I thought the meters only measured dissolvable solids in the water? Plus I'm using the smart pot fabric pots so the run off is getting filtered through the fabric so there isn't any dirt in the run off
Click to expand...
because, soil has mobile and immobile nutrients which are broken down into ions for the plant to uptake. when you measure run off, you measure whatever that water picked up as it ran thru the soil real fast. also, the ph of soil changes as it dries. Measuring run off is unnecessary and adds to the rookie move of loving your plants to death. Less is more.
 
dandyrandy

dandyrandy

Well-Known Member
Dr.Nick Riviera said:
because, soil has mobile and immobile nutrients which are broken down into ions for the plant to uptake. when you measure run off, you measure whatever that water picked up as it ran thru the soil real fast. also, the ph of soil changes as it dries. Measuring run off is unnecessary and adds to the rookie move of loving your plants to death. Less is more.
Click to expand...
Thanks. I had to go fix a damn machine here at work. 23 days.
 
dandyrandy

dandyrandy

Well-Known Member
Sam1510 said:
But how would that explain why one of my plants had an 4200ppm on the run off compared to the others? Thats like 8.8EC which is way too high. I thought the meters only measured dissolvable solids in the water? Plus I'm using the smart pot fabric pots so the run off is getting filtered through the fabric so there isn't any dirt in the run off
Click to expand...
Microscopic
 
Jimdamick

Jimdamick

Well-Known Member
Sam1510 said:
I watered my ladies that are in week 3 1/2 in flower that are growing in 5 gallon smart pots with FFOF soil and I tested the PH and ppm on the runoff water and I was so shocked. Most of my plants were in the 300-1000ppm range with 6.3-6.8 ph but one had 4200ppm and 6.0ph. crazy thing is the plant looked completely fine no signs of nute burns or defeciences. But I still flushed it with a good 15 gallons of clean water with a ph adjusted too 6.7 and tested the runoff after. It read 300ppm and 6.7 ph after the flush(made me feel better) I started at 800ppm during week 1 of flower and been raising it 200 ppm every feeding. Planning on hitting 1600 ppm max and tapering down from there til flush. Last feeding was at 1200ppm. Every plant looks very good so far..

All ppm readings are in the .500 scale

Did I do the right thing?
Can I feed normally on the next schedule?
What caused that to happen?(growing 6 different strains?)
Does my ppm feeding schedule sound right?

Any input would be greatly appreciated ;)
Click to expand...
I would feed a weak solution starting now for all your plants,, except the high PPM plant, which I would just use plain water at a PH of 6.0/6.3
(good PPM for soil) because there is enough nutes already in the soil/root system, which will naturally develop a build up because you are in dirt. You should be fine, as some plants are sensitive to high PPM, but others will love it. Anyway, you are close enough to finish, and this is the time you should back off nutes now anyway. Good luck
 
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Sam1510

Well-Known Member
Dr.Nick Riviera said:
because, soil has mobile and immobile nutrients which are broken down into ions for the plant to uptake. when you measure run off, you measure whatever that water picked up as it ran thru the soil real fast. also, the ph of soil changes as it dries. Measuring run off is unnecessary and adds to the rookie move of loving your plants to death. Less is more.
Click to expand...
Hehe you got me I do love them do death. Should I still worry about measuring the run off ph?
 
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