PPM,TDS, EC and CO2

All 'Pens' measure EC ( Electrical conductivity) and convert to PPM=TDS ( Total dissolved solids) - Gives a reading of how much salt and or matter is in the water. -A reading should be taken of the water before adding Nutes.   microbiology in Nutes: -All bodies of water posses Microbiology. Organic hydro uses high... Continue Reading →

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