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Save 19%
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 19%
HM Digital COM-80 EC/TDS/Temp Waterproof Hydro Tester
In stock
$34.79 $42.95 -19%
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
$8.75 $11.36 -23%
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%
Save 19%
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 18%
Active Aqua 1/2" Elbow Connector, pack of 10
In stock
$3.27 $3.99 -18%
Active Aqua 3/4" Elbow Connectors, pack of 10
In stock
$6.43 $10.83 -41%
Active Aqua Fill/Drain Combo Kit
In stock
$6.39 $8.55 -25%
Save 19%
Active Aqua Bottom Draw Pump Adapter, AAPW250/AAPW400, 1/2” inlet thread
In stock
$3.47 $4.29 -19%
Save 19%
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
$8.45 $12.51 -32%
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%
Save 19%
Active Aqua Grow Flow Tee Hardware Kit, pack of 6
In stock
$11.35 $14.03 -19%
Save 19%
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%
Save 19%
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
Dilution Solutions Nutrient Delivery System Nutrient Monitor Kit, 3/4 in
Out of stock
$1,358.78
Dosatron Mini Maintenance Seal Kit Doser 14GPM
Out of stock
$74.14
AXEON HYDRO RO Hyperfiltration Membranes, 2-Pack
In stock
$242.86 $399.00 -39%
Save 19%
AXEON XE1-4040 RO Membrane 4" x 40"
Out of stock
$392.26 $484.76 -19%
AXEON R1 Series Membrane, 4040
In stock
$511.52 $665.52 -23%
AXEON S–200 Membrane Antiscalant, 5-Gallon
In stock
$701.86 $918.75 -24%
Hydrologic MicRO RO Membrane, 75 GPD
Out of stock
$36.45 $59.95 -39%
Dilution Solutions 3/4 in Mixing Chamber Sunshade
Out of stock
$32.55
Dilution Solutions 3/4 in Filter Kit with Unions, 200 Mesh/80 Micron
Out of stock
$51.04
Dilution Solutions Nutrient Delivery System (NDS) Mixing Chamber Kit, 1 1/2 in
In stock
$231.67
Dilution Solutions Nutrient Delivery System (NDS) Mixing Chamber Kit, 3/4 in
Out of stock
$127.58
Dosatron Mini Seal Kit for D14MZ2, 14 GPM
Out of stock
$44.58
Dilution Solutions Hi-Flo (NDS) Kit, No-Monitor, 1.5 in
Out of stock
$656.70
Dilution Solutions Lo-Flo (NDS) Kit, No-Monitor, 3/4 in
Out of stock
$519.90
Dilution Solutions Nutrient Delivery System (NDS) Starter Kit, 1 1/2 in
Out of stock
$679.29
Dilution Solutions Nutrient Delivery System (NDS) Starter Kit, 3/4 in
Out of stock
$333.62
Dilution Solutions Nutrient Delivery System (NDS) DAB Booster Starter Kit, 3/4 in
Out of stock
$225.68
Dilution Solutions Nutrient Delivery System (NDS) Water Hammer Arrestor Kit, 1 1/2 in
Out of stock
$711.07
Dilution Solutions Nutrient Delivery System (NDS) Water Hammer Arrestor Kit, 3/4 in
Out of stock
$352.15
Active Aqua Replacement Diaphragm for AADAP25L, pack of 2
In stock
$6.05 $9.44 -36%
Save 19%
Active Aqua 12-Outlet Metal Air Manifold
In stock
$14.57 $17.99 -19%
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Active Aqua 6-Outlet Metal Air Manifold
In stock
$8.90 $10.99 -19%
Save 19%
Active Aqua 8-Outlet Metal Air Manifold
In stock
$12.14 $14.99 -19%
Save 9%
Active Aqua Submersible Pump Filter Bag, 10.5" x 13.125"
In stock
$11.99 $13.19 -9%
Active Aqua Submersible Pump Filter Bag, 6.75" x 9.375"
In stock
$7.74 $11.36 -32%
Save 19%
Active Aqua Replacement Impeller for AAPW1000
In stock
$16.08 $19.85 -19%
Save 19%
Active Aqua Replacement Impeller for AAPW160
In stock
$2.98 $3.68 -19%
Save 19%
Active Aqua Replacement Impeller for AAPW250
In stock
$2.98 $3.68 -19%
Save 19%
Active Aqua Replacement Impeller for AAPW400
In stock
$5.00 $6.17 -19%
Save 19%
Active Aqua Replacement Impeller for AAPW550
In stock
$8.09 $9.99 -19%
Save 19%
Active Aqua Replacement Impeller for AAPW800
In stock
$8.09 $9.99 -19%
Active Aqua Pre-Filter for AAPW160
In stock
$0.15 $1.12 -87%
Active Aqua Pre-Filter for AAPW250
In stock
$0.22 $2.37 -91%
Active Aqua Pre-Filter for AAPW400
Out of stock
$0.28 $2.37 -88%
Dilution Solution Pressure Gauge, 0-100 PSI, 1/4" Mount
In stock
$16.63
Save 19%
Active Aqua Chiller 1/2" Fitting Kit for AACH10
In stock
$6.79 $8.39 -19%
Save 19%
Active Aqua Chiller 3/4" Fitting Kit for AACH10
In stock
$7.64 $9.44 -19%
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Active Aqua Chiller 1/2" Fitting Kit: for AACH25,AACH25HP, AACH50 & AACH50HP
In stock
$9.34 $11.54 -19%
Save 19%
Active Aqua Chiller 3/4" Fitting Kit for AACH25, AACH25HP, AACH50 & AACH50HP
In stock
$8.91 $11.01 -19%
Save 19%
Active Aqua Chiller 1" Fitting Kit for AACH50 & AACH50HP
In stock
$11.04 $13.64 -19%
Save 19%
Active Aqua Chiller 1" Fitting Kit for AACH100 & AACH100HP
In stock
$15.30 $18.89 -19%
Cutting Edge Solutions pH Down, 1 qt, case of 12
In stock
$111.62 $167.88 -34%
Cutting Edge Solutions pH Down, 1 gal, case of 4
In stock
$90.40 $135.96 -34%
Cutting Edge Solutions pH Up, 1 qt, case of 12
In stock
$111.62 $167.88 -34%
Cutting Edge Solutions pH Up, 1 gal, case of 4
In stock
$90.40 $135.96 -34%
Microbe Life Hydroponics pH UP, 1 qt
In stock
$14.63 $19.99 -27%
Microbe Life Hydroponics pH DOWN, 1 qt
In stock
$14.63 $19.99 -27%
Save 15%
GroStar GS1 pH Pen
In stock
$98.27 $115.99 -15%
Save 19%
GroStar GS4 pH/EC/500ppm/700ppm/Temp (5-in-1) Combo Pen
In stock
$144.98 $178.99 -19%
Save 19%
GroStar GS2 Soil pH Pen
In stock
$208.16 $256.99 -19%
Save 19%
GroStar GS1-E replacement pH electrode
In stock
$41.30 $50.99 -19%
Save 19%
GroStar GS2-E replacement Soil Spear pH electrode
In stock
$147.41 $181.99 -19%
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GroStar GS4-E replacement pH/EC combo electrode
In stock
$64.79 $79.99 -19%
Save 19%
GroStar pH Probe Maintanence Kit
In stock
$19.43 $23.99 -19%
Save 19%
HM Digital PH-80 pH/Temperature Meter
In stock
$37.69 $46.50 -19%
Save 19%
HM Digital Replacement pH Sensor Probe for HM-500
In stock
$48.59 $59.99 -19%
Active Air 2-Way Moisture/pH Meter
In stock
$7.99 $11.84 -33%
Save 6%
Milwaukee Instruments pH600 Digital pH Pen
In stock
$27.21 $29.00 -6%
Save 6%
Milwaukee Instruments pH 600 pH Tester w/1 Point Manual Calibration
In stock
$28.16 $30.00 -6%
AXEON HYDRO RO 750 Hyperfiltration Smart Water System
In stock
$674.99 $999.90 -32%
Save 19%
AXEON N-2000 Reverse Osmosis System, 2000 GPD, 220V
Out of stock
$8,517.35 $10,525.78 -19%
Save 19%
AXEON N-4000 Reverse Osmosis System, 4000 GPD, 220V
Out of stock
$9,309.86 $11,505.16 -19%
Save 19%
AXEON N-6000 Reverse Osmosis System, 6000 GPD, 220V
Out of stock
$11,931.14 $14,744.53 -19%
Save 19%
AXEON N-8000 Reverse Osmosis System, 8000 GPD, 220V
Out of stock
$13,638.01 $16,853.91 -19%
Show another 128 products