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Hydroponics for the Home Gardener: An Easy to Follow Step-By-Step Guide for Growing Healthy.....

$9.42

Written by: Kenyon, Stewart - Published by: Key Porter Books - Published on: 2005-02-01

HM TDS-4 Pocket Size TDS Meter, TDS4

$26.25

HM TDS-4 Meter will monitor the TDS levels for drinking water, water filters, hydroponics, Aquariums, Food and Coffee, Pools and Spas and residential RO applications. Measurement range is 0-9990 ppm. TDS Meters Are Used To: Check the performance of...

HM TDS-3 Meter with Carrying Case

$27.75

HM TDS-3 Meter is ideal for both residential and commercial applications including but not limited to water purification, waste-water regulation, aquaculture, hydroponics, and residential RO applications. Measurement range is 0-9990 ppm. TDS Meters Are...

HM Digital HMD-COM-100 Waterproof EC / TDS / Temp Combo Meter

$54.99

COM-100: Waterproof EC / TDS / Temp Combo Meter Ideal for all water quality testing, water purification applications, wastewater regulation, aquaculture, hydroponics, colloidal silver, labs & scientific testing, pools & spas, ecology testing, boilers &...

HM Digital HMD-PH-200 HM Digital pH Meter Water Tester

$79.00

PH-200: Waterproof pH Meter Ideal for all pH testing, water purification applications, wastewater regulation, aquaculture, hydroponics, colloidal silver, labs & scientific testing, pools & spas, ecology testing, boilers & cooling towers, water...

Pocket Size TDS Meter

$19.00

This water quality tester enables you to determine just how good or bad your water really is! This tester accurately measures the TDS level in your water. Ideal for all water purification applications, wastewater regulation, aquaculture, hydroponics,...