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Best Sellers

Hanna HI504214 pH ORP controller
List Price: $1049.99
Our Price: $699.99
(save $350, 33%)
MC122 Ph Controller With Standard Plug Socket, Mil...
List Price: $184.49
Our Price: $122.99
(save $61.5, 33%)
MC122 Ph Controller With Standard Plug Socket, Mil...
List Price: $334.49
Our Price: $222.99
(save $111.5, 33%)
Hard Carrying Case for Digital Meters
List Price: $29.99
Our Price: $19.99
(save $10, 33%)
Milwaukee CO2 Regulator Needle / Solenoid Valve
List Price: $136.49
Our Price: $90.99
(save $45.5, 33%)
Kalkstar Kalkwasser Stirrer, Magnetic Stir Bar
List Price: $449.99
Our Price: $299.99
(save $150, 33%) 4
Black handle for CO2 cylinders
List Price: $44.99
Our Price: $29.99
(save $15, 33%)
10 Lb. Aluminum Co2 Bottle, New
List Price: $179.99
Our Price: $119.99
(save $60, 33%)
A.R.M. Coarse Calcium Reactor Media 1 Gallon, Cari...
List Price: $32.99
Our Price: $21.99
(save $11, 33%)
CO2 Regulator (Standard), Red Sea
List Price: $163.34
Our Price: $108.89
(save $54.45, 33%)
CO2 regulator for paintball cylinders.
List Price: $38.39
Our Price: $25.59
(save $12.8, 33%)
Aluminum CO2 Cylinder .50L
List Price: $77.99
Our Price: $51.99
(save $26, 33%)
ACRO Calcium Reactor AC-10, ViaAqua
List Price: $74.24
Our Price: $49.49
(save $24.75, 33%)
Two Little Fishies ReBorn Calcium Reactor Media
List Price: $206.99
Our Price: $137.99
(save $69, 33%)
MC110 pH Monitor, Range: 0.0 To 14.0
List Price: $131.99
Our Price: $87.99
(save $44, 33%)
Mi151 pH/ORP/ºC Combined Bench Meter
List Price: $512.99
Our Price: $341.99
(save $171, 33%)
Ph, Ec, Tds 3 In 1 Smart Digital Combination
List Price: $232.49
Our Price: $154.99
(save $77.5, 33%)
CO2 Regulator (Paintball Style), Red Sea
List Price: $155.09
Our Price: $103.39
(save $51.7, 33%)
Aluminum CO2 Cylinder .82L
List Price: $98.99
Our Price: $65.99
(save $33, 33%)