Originally Posted by
SmobyToker#1
Budwiser - a few pointers.
Water unless ro comes out the tap with some element of rock salts in it already. Mine reads at 0.4. So i know that my water has some elements in it and the (lookingh at my water authority i can see cal and mag amongst others in my tap water)
So when measuring out a feed for example if some one says add 0.4 to your water then my total ec would be 0.8 as its the base reading (0.4) plus my feed reading, making 0.8
I wouldnt worry too much about run off readings unless there is a problem. Dont go taking numbers all the time looking for a problem as you will most likely cause one. Let the plant tell you its un happy and then maybe look into readings of run off. It's all in the leaves and development that you will learn that is when to take run off readings. Tbh i have had perfectly happy healthy plants with high numbers of ec. i find its more the ph that gives a clue to whether the plant is over fed as rock salts build in the media and then drop the ph readings.
I might add that these numbers only give you an idea, not thge problem, for accurate readings a slurry test is required. this involves removing some coco from the root zone and using a set process to measure it.
For now i would just follow Trex advice
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