Runoff @ 1400 ppm

DoubleAtotheRON

Well-Known Member
but you still need EC measurements is the EC meter just as expensive
Nah... EC meters can range from 10-100 bucks depending on your budget. But I have found that 5 cheap meters can read a difference of 200+ PPM. I've have 5 different ones in the mix, and they all read different... some are close, but some are soooo far away.
 

jaked3800

Active Member
So after 2 years of winging it I finally got a ppm/ec meter. Just finished the first week of 12/12 . Water going in tonight was @ 375 ppm. I caught the first bit of runoff and it was @ 1400 ppm. She looks healthy but that seems a crazy number. I let that sit for 20 or so minutes and then ran another gallon of water through and waited till runoff was almost finished and tested again. This time runoff was @ 1150. Should I flush till what comes out is close to what goes in or just skip feeding until the numbers match.

2 600W HPS
10 gal Fabric pot.
75% organic soil
25% perlite
Emerald Harvest nutes (full line up)
Been feeding every day at a full strength mix
Well water
The organic soil alone could be reading 1400 ppm and organic ppm can be much higher than when using salts and really dosent give you an accurate reading for nutrient strength. If it looks happy dont mind the number.
 

Wastei

Well-Known Member
Nah... EC meters can range from 10-100 bucks depending on your budget. But I have found that 5 cheap meters can read a difference of 200+ PPM
Best I think is to keep buying the same EC meter, you only need your own reference point in your own environment to dial nutrient strength in. That should be done by plant response. pH on the other hand should be the same on any calibrated meter.
 

jasonryan00

Well-Known Member
Nah... EC meters can range from 10-100 bucks depending on your budget. But I have found that 5 cheap meters can read a difference of 200+ PPM. I've have 5 different ones in the mix, and they all read different... some are close, but some are soooo far away.
i have a blue lab i was referring to whether you had the Apera EC meter and was it steep like the probe
 

DoubleAtotheRON

Well-Known Member
i have a blue lab i was referring to whether you had the Apera EC meter and was it steep like the probe
No. I buy 5 packs of EC meters every grow cycle. Then I toss them, and buy new ones. I buy the ones in the $25 range. Cheap insurance for a larger, (although I am very small compared to other commercial ops). Just the cost of doing business. I'll dunk 5 of them in the solution and find an average of EC/ppm. After that, I can confidently do my mix during a stage of growth, and not even measure it. As I change stages, I'll re- read my EC, and rock on till the next stage that needs readings.
 
Last edited:

Trippster62

Active Member
if you are such an expert with such boastful numbers wouldn't you already know the answer to your own question
you have been feeding the full schedule of nutrients, if the plant is not using as much as you put in they are building up over time. and then you wonder why the runoff is high with out water passing through the pot.... come on man
the run off lets you know how much concentration of nutrients are present in the medium same for a slurry test
but you do deserve credit to pull those "numbers" without a quality meter
Soil is a hell of a buffer.
My cheap PH pen is great. Just make sure it reads 9.0 with baking soda in water.
Have you ever grown in soil? It acts as a buffer. So, even though my " cheap meter actually reads to the hundredth place I don't need that kind of accuracy. Tenths are good enough.

I will give you this though, you finally almost figured out the cause. I already know what I did wrong. I'm asking how I should deal with the situation now that it has occurred. Not looking for the cause, looking for the fix.

If you think those are boastful numbers your standards are higher for your equipment than for your grow. My son, the overnight manager at the local cultivation center, keeps pushing me to hit that gram per watt. That's why I decided to buy this tds meter. I'm running out of new things to incorporate into my grow. This seemed like something I could use to push the limits on nutes. Maybe get another tenth per watt. After that I've only got a couple more things to try before I have to seal the room and start pumping co2.
 

PadawanWarrior

Well-Known Member
Have you ever grown in soil? It acts as a buffer. So, even though my " cheap meter actually reads to the hundredth place I don't need that kind of accuracy. Tenths are good enough.

I will give you this though, you finally almost figured out the cause. I already know what I did wrong. I'm asking how I should deal with the situation now that it has occurred. Not looking for the cause, looking for the fix.

If you think those are boastful numbers your standards are higher for your equipment than for your grow. My son, the overnight manager at the local cultivation center, keeps pushing me to hit that gram per watt. That's why I decided to buy this tds meter. I'm running out of new things to incorporate into my grow. This seemed like something I could use to push the limits on nutes. Maybe get another tenth per watt. After that I've only got a couple more things to try before I have to seal the room and start pumping co2.
Just curious. But does he work in the Garden section at Home Depot?
 

Trippster62

Active Member
It's hard to over-emphasize the importance of reliable measurements while growing hydroponically.
In my experience the cheap pH meters are unreliable and often give wildly inaccurate readings.
If you can reliably calibrate your pH meter, you're good to go. Check it frequently.

pH drop test kit:
View attachment 5098993
View attachment 5098994
Not hydro. Maybe if I were running hydro I might place more importance on the meters. Yes check calibration often, I get it.
 

Trippster62

Active Member
You seem like a huge douche and no on cares about your GPW.

I bought my Bluelab pen on Fri, May 13, 2016. It's still accurate, but the thermometer started wonking out a few weeks ago.
Maybe I am.
Maybe it's been a bad day.
I'm not saying Bluelab isn't good. I'm just saying the one I was gifted wouldn't calibrate. It could have been mishandled before I got it. It could have been defective. Doesn't matter, for me to spend that kind of money I'm going need to be working in the field not just a hobbyist like I am now.
 

Trippster62

Active Member
The organic soil alone could be reading 1400 ppm and organic ppm can be much higher than when using salts and really dosent give you an accurate reading for nutrient strength. If it looks happy dont mind the number.
Thank you. I just potted some clones in fresh fox farms soil. I'll check the runoff on those tomorrow and see what I get. This whole tds meter is new to me. I remember when this was a good place to look for info.
 

Trippster62

Active Member
Blue Labs FTW not outrageously priced, and with regular maintenance they last a long time
Roflmao,
$100.00 not outrageous? You must have more dollars than sense.
Last a long time??? What do you consider a long time? I was gifted one that had only been used for a year. When I tried to calibrate it it would not calibrate.
I owe you an apology. I'm sorry, it does seem that I started this. I felt like you were criticizing a retired old man for trying to save a dollar or two while trying to grow his own medicine. I'm just trying to get better each grow. If I can see results maybe in the future I might see value in a higher quality meter, but since this is my first time messing with a ppm/tds/ec meter I'm just trying to get some idea of what to make of numbers that don't seem to do what everything I've been reading the last few days says they should. Again I apologize for getting "butthurt".
 

Trippster62

Active Member
I respect that. I wouldn't be flexing a GPW when your plants are wilting and dying off though. Glass houses and whatnot.
I get what you're saying. This was the first time in two years I've had anything this disastrous happen. I have 2 of 4 left that were supposed to be for this grow. I tried to get these 2 to take up as much sq footage as possible. Looks like I'm not going to fill all of my net but should come close. Getting these wild numbers after losing 2 already it has me concerned.

As far as GPW goes I still feel that until I hit 1 gram per watt there is room for improvement. I looked back at some previous stats and in the last 3 runs I've seen steady improvement.
Previous grow was .63 and grow before that was .54 so maybe I was flexing on my best grow to date.
Have to shoot for a new flex point this time a try for most per plant.
 
Last edited:
Top