High EC readings with correct dosage of nutes...help???

Hi, i am currently growing a single plant in cana coco professional plus in a 15l pot. I am watering it every other day or when the medium feels dry with 2lites of ph adjusted water and micro-grow-bloom nutes. I make up the feed, using a pipette to measure the nutes and follow the back of the bottles for how much of each to use. I follow the ml/l line and double it up. After a good stir i measure the EC reading and whenever i do it reads twice as much as is recommended. Coiuld anyone tell me where i am going wrong here.

Thankyou

What is the model of your meter? what are the nutes UR using? Need this info to help.

...if your using tap water it may have a high EC.

Hi, its a generic model of EC Pen purchased of ebay (LOT µS EC Conductivity Tester)
It seems to work ok, the pH of water here is 7.5.
The nutes i am using are Advances Nutrients Micro-Grow-Bloom

Cheers again

Your EC pen has a .5 conversion factor and reads PPM most likely. On the back of the AN bottles, do they give a ppm or EC value? What may be going on is AN calls for an EC value but your meter is in PPM. The PPM for instance reads 1000 which translates to EC of 2 (2000us) Is that the case? The bottle values are in EC?

On the label it is measured in PPM, at the moment it states it should be 1000PPM but when i tested the feed it was 2000.

nvm...I had the wrong chart up.