Think I may have made a mistake :(

redge89

redge89

Member
Hi all just sat down reading the sheet that came with my nutrients, when I noticed that it said ec after a bit of research I found that its a form of measurement, anyway I have been adding for example 2 ml of nutrient solution to 10 litres of water, but I think it means a 2.0 ec not ml :), is there a device like a ph tester to test the ec?, how much do you think I have hindered my plants? Here is the sheet
I'm referring to the yellow colum 1404846910001.jpg Cheers guys

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redge89

redge89

Member
Nope I'm 6 weeks in to flower and have been doing it in ml from the start no nute burn or other major deficiencies that I have noticed do u think I have been under feeding?

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DeeTee

DeeTee

Well-Known Member
It appears they are using ec rather than ppm's, here's a chart I found for conversion, doesn't matter how many gals you use but the final measure should be according to the sheet.


EC to PPM scale

ec ppm’s ec ppm’s

0.1 50 ****** 1.7 850

0.2 100 ****** 1.8 900

0.3 150 **** ** 1.9 950

0.4 200 ****** 2.0 1000

0.5 250 ****** 2.1 1050

0.6 300 ****** 2.2 1100

0.7 350 ****** 2.3 1150

0.8 400 ****** 2.4 1200

0.9 450 ****** 2.5 1250

1.0 500 ****** 2.6 1300

1.1 550 ****** 2.7 1350

1.2 600 ****** 2.8 1400

1.3 650 ****** 2.9 1450

1.4 700 ****** 3.0 1500

1.5 750 ****** 3.1 1550

1.6 800 ****** 3.2 1600


 
Squidbilly

Squidbilly

Well-Known Member
Yes, ever grower should have a meter IMO. You can definitely make due without a ec/ppm meter but you'll never know exactly what your feeding your plants or be able to accurately diagnose a potential problem without one. If you can't get one, then start your nutes out low and slowly work your way up. Most plants will thrive with no more 50% what the bottle recommends(espeically if using cfls or fluros), but every situation is different.
 
Squidbilly

Squidbilly

Well-Known Member
If your plants look healhty and green your not under feeding. Remember more feed does not equal more growth. Plants 'uptake' what they need, if you were underfeeding you would have deficiency symptoms. It's better to slightly under feed then to over feed.
 
Da Mann

Da Mann

Well-Known Member
DeeTee said:
It appears they are using ec rather than ppm's, here's a chart I found for conversion, doesn't matter how many gals you use but the final measure should be according to the sheet.


EC to PPM scale
ec ppm’s ec ppm’s

0.1 50 ****** 1.7 850

0.2 100 ****** 1.8 900

0.3 150 **** ** 1.9 950

0.4 200 ****** 2.0 1000

0.5 250 ****** 2.1 1050

0.6 300 ****** 2.2 1100

0.7 350 ****** 2.3 1150

0.8 400 ****** 2.4 1200

0.9 450 ****** 2.5 1250

1.0 500 ****** 2.6 1300

1.1 550 ****** 2.7 1350

1.2 600 ****** 2.8 1400

1.3 650 ****** 2.9 1450

1.4 700 ****** 3.0 1500

1.5 750 ****** 3.1 1550

1.6 800 ****** 3.2 1600
Click to expand...
Dude. He cant understand a nute schedule. This will mess him up for sure.
 
redge89

redge89

Member
The big leaves turning yellow but I heard that was normal this late in to flower other than that the little leaves coming.out the bud are nice and green

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DeeTee

DeeTee

Well-Known Member
Didn't mean too, thought it would help, sorry, he doesn't mention if he has a TDS meter, I just assumed it.
 
redge89

redge89

Member
Ok guys bit of a learning curve :), do I need a tds, ec and ppm meter just looking on ebay ?

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DeeTee

DeeTee

Well-Known Member
A TDS meter would be of great help, you will then know the strength of your nutes, doesn't matter weather ec or ppm's it's up to you which one is more comfortable.
 
redge89

redge89

Member
I can convert ppm to ec with ur table so maybe a tds and ppm? What does the tds reading look like and how would I know what tds level I need.

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-Dodge-

-Dodge-

Member
redge89 said:
I can convert ppm to ec with ur table so maybe a tds and ppm? What does the tds reading look like and how would I know what tds level I need.

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Click to expand...
Just remember that different TDS meters come with different conversion rates. The chart he showed is using a 0.5 conversion rate. Other pens come in 0.7 sometimes.
As long as you know what your conversion rate on your pen is, figuring out the EC does not require a chart, just a calculator. With a 0.5 tds pen you just double the ppm to find the EC. 0.7 is a little trickier, multiply the ppm by 0.7 then double it to get a very close approximation.
I recommend getting an EC/ppm in one to make things simpler.
 
screediu

screediu

Well-Known Member
thats what i love about the bluelab has both 500 and 700 reading on it along with ec and cf, and never has to be calibrated just cleaned well once a week and rinsed off after each use
 
rob333

rob333

Well-Known Member
be honest ppm and ec are for nerds lol i used to use one like 5 years ago but once u no ur plant well i havent used it for about 5 years ;)
 
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