RUN OFF PPM IS THIS OKAY?

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greenthumbjudex

Member
DaFreak said:
That makes no sense to me, how can you add 500ppm and get 100ppm out? Normally you are going to have some salts in the medium and your run-off will be a little higher then what's going in. Lets say you added 500 and a week later your plants have eaten 400 of that and you add 500 again. The run off coming out will be that 500 that goes through and brings with it a little bit of the 100 that's left over so it should be over 500. The only thing I can think of is that your air-pots are filtering the salts out and your testing your run-off will tell you absolutely nothing of value. Don't worry, you don't really need to test your run-off anyway. It can be valuable information but even without it you can just read your plants.
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Idk i am feeding her every watering with ph. 6.2 and started giving her nutes with 350ppm and now i higher it to 500 and the runoff still the same of 100
 
G

greenthumbjudex

Member
giantcola said:
Did you buffer the coco? When such values are showing, i’ll guess the medium is locking up the calcium, has to do with cation exchange sites, and so the mineral comes not available as the coco bonds to it.
if that’s the case, i’ll suggest to check how to buffer coco coir or give the plant a massive calcium feed
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yes i did buffer the coco
 
D

DaFreak

Well-Known Member
greenthumbjudex said:
Idk i am feeding her every watering with ph. 6.2 and started giving her nutes with 350ppm and now i higher it to 500 and the runoff still the same of 100
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So that cloth bag it is in is somehow filtering the salts. There is no way that small plant used all those pumps. Not gonna happen. So top even looking at the run-off and trust what your plant is saying or you'll regret it.
 
T

teddy bonkers

Well-Known Member
greenthumbjudex said:
Idk i am feeding her every watering with ph. 6.2 and started giving her nutes with 350ppm and now i higher it to 500 and the runoff still the same of 100
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Plants grown in coco coir need a pH level ranging from 5.5 to 6.3, depending on the life stage of the plants. Normally, pH is adjusted to 5.5 - 5.8 during growth and 6.0 - 6.3 during bloom, which helps the plant to assimilate the most demanded nutrients at each stage.
 
giantcola

giantcola

Well-Known Member
For sure is better to have lower runoff that higher comparing to the input. If she doesn’t show deficiencies in one or two weeks you won’t need to change anything, just keep the feeding schedule on track.. can you tell us something about how you feed her?
 
giantcola

giantcola

Well-Known Member
Mr. Krinkle said:
No not at all - checking run-off is useless information - so that's all you should worry about - wasting your time on useless information
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Actually when growing with salt based nutes, monitoring runoff can make feeding super accurate and is really important if you know how to dial things in the right way.
Why do hydro growers check their reservoir daily?
 
G

greenthumbjudex

Member
giantcola said:
For sure is better to have lower runoff that higher comparing to the input. If she doesn’t show deficiencies in one or two weeks you won’t need to change anything, just keep the feeding schedule on track.. can you tell us something about how you feed her?
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I feed her with flora series with calmag. started with 1/4 strngth and i increase it slightly, and i feed everyday after watering
 
G

greenthumbjudex

Member
teddy bonkers said:
Plants grown in coco coir need a pH level ranging from 5.5 to 6.3, depending on the life stage of the plants. Normally, pH is adjusted to 5.5 - 5.8 during growth and 6.0 - 6.3 during bloom, which helps the plant to assimilate the most demanded nutrients at each stage.
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i maintain the ph with 6.2 idk maybe i started with 5.5 lol
 
giantcola

giantcola

Well-Known Member
I use flora 3 part too. Very easy but the ratios are a bit off IMHO, I prefer to use 1-3 part micro, 6 parts bloom and 9 parts grow during veg, if adding cal mag that will most likely have a content of nitrogen. (Now I use 5 parts of a bottled nute containing 9% calcium and 9% nitrogen nitrate as well as 2% mag)
What does it mean that you feed every day after watering?
I’ll suggest to consider this option if the girl is not an heavy feeder:
First day full strength feed let’s say 500 ppms
Second day water with just 250 ppms calmag
Third day same calmag watering and check runoff
fourth day feed again, you can also do it every other day
 
giantcola

giantcola

Well-Known Member
Mr. Krinkle said:
yea ok einstein :roll:
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Why do you say that? In my experience monitoring runoff in coco has always been necessary to rapidly understand how to feed the plant. What is wrong with that if using salt based nutes? I’m not monitoring runoff ph, just ec
Please expose your reasons to say that and we may have some interesting debate
 
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G

greenthumbjudex

Member
giantcola said:
I use flora 3 part too. Very easy but the ratios are a bit off IMHO, I prefer to use 1-3 part micro, 6 parts bloom and 9 parts grow during veg, if adding cal mag that will most likely have a content of nitrogen. (Now I use 5 parts of a bottled nute containing 9% calcium and 9% nitrogen nitrate as well as 2% mag)
What does it mean that you feed every day after watering?
I’ll suggest to consider this option if the girl is not an heavy feeder:
First day full strength feed let’s say 500 ppms
Second day water with just 250 ppms calmag
Third day same calmag watering and check runoff
fourth day feed again, you can also do it every other day
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i start to feed her at day 7, every watering started with 300pm and higher it to 500 this day, looks like she is happy.
 
giantcola

giantcola

Well-Known Member
Saying first that everyone grows in a different way and what matters for one can be not useful for one other.. you can grow for sure without monitoring runoff, but it depends on the style of the cultivation.
Growing in drain to waste coco, I can’t imagine how I could dial in nutrients for different plants every day without knowing runoff.
If you trash the plant with a ton of solution everyday, there will be a sort of flushing happening so you can avoid to monitor runoff, but you can’t immediately know if the plant needs more or less ppms..
I get around 30% runoff and take my readings when the pot has done dripping
 
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