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The Optima Vision The Optima Vision $129.00
DI Resin Refill 1 lb DI Resin Refill 1 lb $13.50
Granular Ferric Oxide 4 lbs Granular Ferric Oxide 4 lbs $76.00
The Optima 150 Dual DI The Optima 150 Dual DI $179.00
75 GPD Membrane add-on 75 GPD Membrane add-on $56.95
Eshopps Float Valve Eshopps Float Valve $39.95
Reef Max 100 Media reactor Reef Max 100 Media reactor $36.50
Optima Vision filter set + membrane Optima Vision filter set + membrane $68.00
4 LBS LIGNITE CARBON 4 LBS LIGNITE CARBON $19.50
Nitrite Ultra Low Range Checker HI 764 Nitrite Ultra Low Range Checker HI 764 $59.95

Ph Meters

Hanna Phep-4 Ph meter The waterproof pHep® 4 pH testers have a dual-level LCD that displays pH and °C or °F. At startup, pHep® performs a ...
The PH-200 The PH-200 Ph Meter is a feature packed meter at an affordable price! With features such as a splash proof keypad, automatic...
pH Gro'chek The innovative pH Gro'chek has been designed to meet the Grower's need for equipment suited to the aggressive...
The pH Turtle The HANNA instruments® pH Turtle (HI 9815) is a sophisticated, yet easy-to- use transmitter that turns any PC into a pH meter.
Ph + temp Gro check Featuring an extra large LCD dual level display, this wall mounted meter gives a continuous readout of pH and temperature.
PH-200 + PM 3000 Combo PM 3000 Hand Held TDS meter + The PH-200 pH meter. A power packed combo for accurate water testing...

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Featured Products

The PM 3000 The PM 3000 $19.95
Dual Inline TDS meter Dual Inline TDS meter $29.40

About RO DI

RO DI GIVEAWAY!