New Grower EC readings... slightly confused

BillyWu

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Hi folks :] Just got a quick question regarding EC readings. Here is a post I previously made:

Day 6 update

Hurray! Finally my Biobizz Root Juice and Formulex arrived today, so I'm gonna be starting the feeding before I switch to vegging nutes in a few weeks time.

Mixed in 1ml/litre of Root Juice and 1.5ml/litre of Formulex in with a litre of pH 7.6 water, brought it down to a perfectly balanced pH 7 solution! Checked it with my PPM/EC meter to ensure I wasn't going overboard with it, the µS came up at 555. Using the KCl calibration conversion of 0.53, I came up with 555 x 0.53 = 294.15. Dividing that by 1000, I believe the EC of the water is currently at 0.29mS, which is slightly weak as I was aiming for approximately 0.4 for such a little plant. Just gonna leave it as it is for today to ensure I'm doing it properly :] The meter I use is the HM EC-3 (http://www.tdsmeter.com/products/ec3.html), calibrated with potassium chloride (KCl, http://www.tdsmeter.com/what-is?id=0019). Could someone make sure I'm measuring my EC right please? Pretty sure I am, but just want to make sure :] If I don't need to use the 0.53, then my EC is at 0.5mS.

That pretty much explains it all at once. Could anyone shed some light on the subject please? It'd be most helpful and much appreciated :]
 
probably not getting many replies because most usa growers (seems like most of the forum here) measures ppm instead of ec so your speaking jibberish to most.
 
Don't know to much about ec readings but 0.5 or 250ppm should be fine for young ones also stumbled across this chart hope it help

uploadfromtaptalk1336925505049.jpg
 
Yeah I saw that chart, got it saved :] I'm going by EC instead of PPM, aiming for 0.4 - 0.6 for my seedling, just wanted to make sure I've got the right calculation for EC.
On second thought, µS to mS is 1:1000 anyway, so my calculation of 0.5mS was right. Equates to roughly 250 PPM :]
 
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