Quote:
Originally Posted by MRbudsmoker
babygrow wat is ec. i've never really known or asked.?
Nice one. i never test ph. and mines doin fine.
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EC stands for Electrical Conductivity. It's a measure of TDS (Total Dissolved solids) in the water. When you measure EC you measure an electrical charge between two probes and the amount of resistance encountered - the resistance is the dissolved solids.
EC and TDS can also be expressed as ppm or parts per million which is the measure or ratio of the amounts as expressed in millionths.
EC is important because it measures the TDS or dissolved salts in your irrigation water - too high and you'll burn plants with it.
If you're growing in soil you don't need to worry about ph - soil and composts are ph self buffering.