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The 300 GPD Optima Vision The 300 GPD Optima Vision $249.95
Aquatec Permeate pump Aquatec Permeate pump $64.99
Optima Dual Carbon Filter Set Optima Dual Carbon Filter Set $36.50
DI add on kit DI add on kit $36.50
test test $0.01
Reef Max 100 Media reactor Reef Max 100 Media reactor $36.50
15 LBS LIGNITE CARBON 15 LBS LIGNITE CARBON $59.95
Refillable DI & Carbon Cartridge Refillable DI & Carbon Cartridge $6.99
pH Gro'chek pH Gro'chek $90.85
Membrane Flush kit Membrane Flush kit $9.95

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

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

About RO DI

RO DI GIVEAWAY!