• Sale!

    Active Air Hygro-Thermometer

    $21.95 $16.46
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  • MSRP: $5.95

    Active Air Stainless Steel Duct Clamps – 8″

    $4.46
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  • MSRP: $6.95

    Active Aqua 6 Outlet Copper Air Divider

    $5.21
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  • Sale!

    Bulb Hal 175W Unv

    $45.00 $33.75
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  • MSRP: $8.89

    Can 2600 Pre-Filter

    $6.67
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  • MSRP: $8.89

    Can 33 Pre-Filter

    $6.67
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  • MSRP: $11.95

    Claber Koala Indoor Faucet Connector

    $9.56
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  • Sale!

    Greengro Ultrafine Myco 4oz AIO

    $20.99 $15.74
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  • Sale!

    HM Digital pH 80 Meter

    $62.95 $47.21
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  • Sale!

    HM TDS-3 Handheld TDS meter

    $37.00 $27.75
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  • Sale!

    Hydro-logic Flowmaster Flow Meter

    $59.00 $44.25
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  • Sale!

    Hydro-logic Flowmaster Ultra Low Flow Model 1/4 in

    $59.00 $44.25
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  • MSRP: $9.95

    Mogul Base Socket 5KV/HOR w/ 5 in Leads

    $7.46
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  • Sale!

    Oakton pHTestr 20 with .01 pH Accuracy and ATC (Automatic Temperature Compensation)

    $152.99 $114.74
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  • Sale!

    Oakton Waterproof Eco Tester pH1

    $72.99 $54.74
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  • Sale!

    Oakton Waterproof EcoTestr pH 1

    $72.95 $54.71
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  • Sale!

    oxyCLONE oxyCERTS (20/pk)

    $19.99 $16.99
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  • MSRP: $9.95

    Plug Adapter Brand S

    $7.46
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  • MSRP: $1.05

    Pro Cal Thermo 2 Gal

    $0.79
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  • Sale!

    Pur Gro pH Probe Industrial Replacement

    $148.95 $111.71
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  • MSRP: $9.95

    Receptacle Adapter Brand S

    $7.46
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  • Sale!

    Replacement Bulb for OZN-1

    $27.95 $20.96
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  • Sale!

    SPO EC/TDS Probe for HI981409 & HI981410

    $69.95 $52.46
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  • MSRP: $9.47

    SunBlaster CFL 26 Watt 6400K

    $7.10
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  • MSRP: $10.95

    Titan Controls Apollo 6 – One Outlet Mechanical Timer (10/Cs)

    $8.21
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  • MSRP: $25.95

    8″ Rockwool Block Cover

    $19.46
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  • MSRP: $19.95

    Active Eye Microscope, 40X

    $14.96
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  • MSRP: $18.95

    Active Eye Microscope, 60Xx100X

    $14.21
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  • MSRP: $31.78

    Bloombastic 80ml

    $23.84
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  • MSRP: $15.75

    EZ-Clone EZ-Coco Collars – 35/Pack

    $11.81
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