Skybound
Well-Known Member
I tried reverse engineering AN, but they don't like to share their recipe and their guaranteed analysis I find to be lacking, likely due to their proprietary blend, so my magic won't be of much use aside from a general explanation.
TDS/EC meters test the solution by sending a known voltage through one electrode and measuring what is recorded on the other electrode. It measures the amount of dissolved salt in the water, but our synthetic nutrients aren't entirely soluble salts, and AN I suspect to be even less so with their proprietary contents they also add such as chelating agents or other organic matter to buffer the PH for the end user. I myself like to add fulvic and humic acids after I mix my nutes which themselves have something of a blocking effect which causes peculiar readings on my meter from time to time. So I can only speculate and say that the organic or other contents of your solutions are in a sense playing games with your meter which in turn is then playing games with you.
TDS/EC meters test the solution by sending a known voltage through one electrode and measuring what is recorded on the other electrode. It measures the amount of dissolved salt in the water, but our synthetic nutrients aren't entirely soluble salts, and AN I suspect to be even less so with their proprietary contents they also add such as chelating agents or other organic matter to buffer the PH for the end user. I myself like to add fulvic and humic acids after I mix my nutes which themselves have something of a blocking effect which causes peculiar readings on my meter from time to time. So I can only speculate and say that the organic or other contents of your solutions are in a sense playing games with your meter which in turn is then playing games with you.