What feed doseage do you ise with H&G cocos?

Just want to know how many ml per litre people are using with H&G cocos.
The feeding schedule gets up to 3ml per litre plus all there additives and says that should give a ec of 2.0, but I'm at 2 ml per litre no additives and I'm getting 2.0 ec

What’s your base water ec?

0.35 my base is

Calibrate your meter lately?

Hmm no I haven't, this one is only couple weeks old tho. Old one got dodgy an wouldn't work sometimes but I have just noticed the 2 meters get different readings.
I'll have to have a Google to find out what I need to do a calibration.

Unless you’re using premium meters you should calibrate weekly or even every use depending how unstable the meter is