Hi,
There are instructions on the back of each bottle, recommending dosage for a said quantity of water. The question is if i follow that dosage shouldn’t my PPM/ EC also read the same as given?
Using RO water. MY EC reads less than half.
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Welcomed to the community @N00b
You should fees them the ppm recommended for each stage
I used GH floratrio but I don’t had ppm test
Went I feed my plants I used the doze they recomended and work fine went I add more my plants started showing sing of nute burn
I just said go little by little and see how they react
Happy growing 
What they are giving you is the ratio to each other. Then when mixed add water to get the recommended or desired ppm. ( net ppm not total which is ppm mixed - the ppm of water before anything is added)
Im sorry if i sound dull but, for example if at the flowering stage the recommended doses are Flora Gro 0.8ml/L , Flora Micro 1.6ml/L, Flora Bloom 2.4ml/L and i have a 9 Liter bucket, it means everything multiplied by 9, yes? Okay
Now the EC range given is 1.4-2.2 for flowering.
Using R.O water and the above dosages i only get an EC of about 0.8. What i’m understanding is, ill have to add more in the same ratio to hit the flowering EC range? Correct?
I was under the suspicion my nutrients had been watered down. Thankyou so much!