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GroStar GS3 EC Pen
In stock
$92.33 $113.99 -19%
Save 19%
GroStar GS3-E replacement EC electrode
In stock
$43.73 $53.99 -19%
Save 19%
HM Digital HydroMaster Portable/Wall Mount/Bench Continuous pH/EC/TDS/Temp
In stock
$290.25 $359.00 -19%
Save 13%
HM Digital COM-80 EC/TDS/Temp Waterproof Hydro Tester
In stock
$37.42 $42.95 -13%
Save 19%
HM Digital Hydromaster Replacement EC/TDS Probe
Out of stock
$40.49 $49.99 -19%
HM Digital TDS-3 Handheld TDS meter
In stock
$22.26 $33.99 -35%
Save 6%
Milwaukee Instruments EC40 PRO EC/TDS Nutrient Meter
In stock
$89.14 $95.00 -6%
Active Aqua 1" Straight Connector, pack of 10
In stock
$7.67 $11.36 -32%
Save 9%
Active Aqua 1/2" Straight Connector, pack of 10
In stock
$3.63 $3.99 -9%
Active Aqua 3/4" Straight Connector, pack of 10
In stock
$6.12 $9.02 -32%
Save 19%
Active Aqua 1/2" Fill/Drain Fitting, pack of 10
In stock
$17.66 $21.83 -19%
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Active Aqua 3/4" Fill/Drain Fitting, pack of 10
In stock
$19.84 $24.50 -19%
Save 18%
Active Aqua 1" Fill/Drain Fitting, pack of 10
In stock
$21.68 $26.55 -18%
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Active Aqua Extension Fitting, 1", pack of 10
In stock
$5.64 $6.96 -19%
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Active Aqua Screen Fitting, 1", pack of 10
In stock
$5.86 $7.23 -19%
Active Aqua Washer Fitting, pack of 10
In stock
$0.99 $4.67 -79%
Active Aqua 1" Elbow Connector, pack of 10
In stock
$8.28 $14.05 -41%
Save 9%
Active Aqua 1/2" Elbow Connector, pack of 10
In stock
$3.63 $3.99 -9%
Active Aqua 3/4" Elbow Connectors, pack of 10
In stock
$7.32 $10.83 -32%
Save 18%
Active Aqua Fill/Drain Combo Kit
In stock
$6.98 $8.55 -18%
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Active Aqua Bottom Draw Pump Adapter, AAPW250/AAPW400, 1/2” inlet thread
In stock
$3.47 $4.29 -19%
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Active Aqua Bottom Draw Pump Adapter, AAPW550/AAPW800, 5/8” inlet thread
In stock
$4.50 $5.55 -19%
Save 19%
Active Aqua Bottom Draw Pump Adapter, AAPW1000, 3/4” inlet thread
In stock
$5.35 $6.60 -19%
Active Aqua 1/2" Stopper, pack of 10
In stock
$5.12 $7.56 -32%
Active Aqua 3/4" Stopper, pack of 10
In stock
$6.02 $8.94 -33%
Active Aqua 1" T Connector, pack of 10
In stock
$7.32 $12.51 -41%
Save 8%
Active Aqua 1/2" T Connector, pack of 10
In stock
$3.85 $4.17 -8%
Active Aqua 3/4" T Connector, pack of 10
In stock
$6.82 $10.09 -32%
Grodan Dutch Leach Tray Elbow, bag of 25
In stock
$7.75 $39.66 -80%
FloraFlex QDPS Open Flow Bubbler, Elbow, 3/4"
In stock
$23.88 $32.16 -26%
FloraFlex QDPS Open Flow Bubbler, T, 3/4"
In stock
$23.88 $32.16 -26%
FloraFlex QDPS Multi Flow Bubbler, Elbow, 3/4"
In stock
$24.66 $33.21 -26%
FloraFlex QDPS Multi Flow Bubbler, T, 3/4"
In stock
$24.66 $33.21 -26%
FloraFlex QDPS Multi Flow Bubbler, Elbow, 1"
In stock
$25.70 $33.71 -24%
FloraFlex QDPS Multi Flow Bubbler, T, 1"
In stock
$11.76 $33.71 -65%
Save 19%
Active Aqua Grow Flow Elbow Hardware Kit, pack of 6
In stock
$11.35 $14.03 -19%
Save 19%
Active Aqua Grow Flow 3/4" Elbow Hardware Kit, pack of 6
In stock
$12.62 $15.58 -19%
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Active Aqua Grow Flow Tee Hardware Kit, pack of 6
In stock
$11.35 $14.03 -19%
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Active Aqua Grow Flow 3/4" Tee Hardware Kit, pack of 6
In stock
$12.62 $15.58 -19%
Save 19%
Raindrip 1/4" Barbed Tee, pack of 50
In stock
$15.24 $18.82 -19%
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Raindrip 1/4" Barbed Connector, pack of 50
In stock
$10.18 $12.56 -19%
Save 19%
Raindrip 1/4" Barbed Elbow, pack of 50
In stock
$8.52 $10.51 -19%
AXEON 30 Gallon Tank and 15 GPD Chemical Injection System 110V
In stock
$1,568.73 $2,211.69 -29%
AXEON 30 Gallon Tank and 4 GPD Chemical Injection System 110V
In stock
$1,482.93 $2,090.73 -29%
Dosatron D20S
Out of stock
$4,388.60
Dosatron Water Powered Doser 11 GPM 1:1000 to 1:112, 3/4 in
Out of stock
$1,029.65
Dosatron Water Powered Doser 11 GPM 1:500 to 1:50, 3/4 in
Out of stock
$688.06
Dosatron INJECTOR 14GPM MAX 0.25 TO 2.25 TSP/GAL W/ 1 UNION
Out of stock
$1,370.91
Dosatron Water Powered Doser 14 GPM 1:500 to 1:50, 3/4 in
Out of stock
$793.62
Save 13%
Dosatron INJECTOR 14gpm MAX 1:330 TO 1:3000 BYPASS KALREZ/VITON SEALS
In stock
$1,474.48 $1,692.09 -13%
Dosatron Water Powered Doser 14 GPM 1:100 to 1:10, 3/4 in
Out of stock
$1,370.91
Dosatron 40 GPM, 1.25 to 7.5mL, Bypass Switch-AFLAS-Union
Out of stock
$2,123.96
Dosatron 40 GPM, 1.25 to 7.5mL, Bypass Switch VK Chem Seals
Out of stock
$2,039.66
Dosatron 40 GPM, 1.25 to 7.5mL, Bypass Switch-VITON-Union
Out of stock
$2,123.96
Dosatron 40 GPM, 7.5 to 75mL, Bypass Switch-VITON-Union
Out of stock
$1,436.29
Dilution Solutions Nutrient Delivery System (NDS) End Kit, 1 1/2 in
Out of stock
$559.01
Dilution Solutions Nutrient Delivery System (NDS) End Kit, 3/4 in
Out of stock
$425.63
Dilution Solutions (NDS) Micro-Doser System, 3/4 in Left to Right (Lo-Flo)
Out of stock
$1,952.02
Dilution Solutions (NDS) Micro-Doser System, 3/4 in Right to Left (Lo-Flo)
Out of stock
$2,002.10
Dilution Solutions Nutrient Delivery System (NDS) Micro-Doser Kit, 1 1/2 in Left to Right (Hi-Flo)
Out of stock
$2,662.92
Dilution Solutions Nutrient Delivery System (NDS) Micro-Doser Kit, 1 1/2 in Right to Left (Hi-Flo)
Out of stock
$2,610.70
Dilution Solutions Flow Restrictors 3/4 in
Out of stock
$85.34
Dilution Solutions Flow Restrictor, 3/4 in 14 GPM (D14 Series)
Out of stock
$85.34
Dilution Solutions Nutrient Delivery System (NDS) Monitor Kit, 1 1/2 in
Out of stock
$1,649.71
Show another 64 products