Water Testing & Control

Monitor and manage pool chemistry with test kits, sensors, and controllers.

  • Save 34%
    Kokido Plated Thermometer with Cord PS088 Deluxe Series Chrome
    Kokido Plated Thermometer with Cord PS088 Deluxe Series Chrome - K088CBX24
    SKU: K088CBX24
    $21.66
    $33
    In stock
  • Save 33%
    Kokido Jim Buoy Thermometer with Cord PS080 Deluxe Series
    Kokido Jim Buoy Thermometer with Cord PS080 Deluxe Series - K080CBX24
    SKU: K080CBX24
    $20.55
    $31
    In stock
  • Save 33% Out of stock
    Kokido Digital Floating Thermometer PS884 12/Case Supreme Series
    Kokido Digital Floating Thermometer PS884 Supreme Series - DT37CS/SUP
    SKU: DT37CS/SUP
    $32
    $48
    Out of stock
  • Save 34% Out of stock
    Super-Pro Dip-N-Read Thermometer with Cord PS050 Deluxe Series Blue - K050CBX24/SCP
    SKU: K050CBX24/SCP
    $18.25
    $28
    Out of stock
  • Save 33% Out of stock
    Kokido Storm Floating Thermometer PS897 28" Supreme Series
    Kokido Storm Floating Thermometer PS897 28" Supreme Series - TM60CBX12/F
    SKU: TM60CBX12/F
    $73.53
    $111
    Out of stock
  • Save 33% Out of stock
    Kokido Tutti-Frutti Thermometers PS885 12/Case Supreme 3 Styles
    Kokido Tutti-Frutti Thermometers PS885 Supreme 3 Styles - TM06CB/SUP
    SKU: TM06CB/SUP
    $25.12
    $38
    Out of stock
  • Save 34% Out of stock
    OREQ Pool/spa Thermometer 6/PK Chillin Charlie - TH600DB
    OREQ Pool/spa Thermometer 6/PK Chillin Charlie - TH600DB
    SKU: TH600DB
    $30.81
    $47
    Out of stock
  • Save 33%
    Paramount Winter Rubber Expansion Plug #12 w/ Brass Wing Nut for 2" Fitting
    Hayward Paramount Winter Rubber Expansion Plug #12 w/ Brass Wing Nut for 2" Fitting - 004302167000
    SKU: 004302167000
    $33.14
    $50
    In stock
  • Save 33%
    Poolmaster Classic Briteline Thermometer | 25393
    Poolmaster Classic Briteline Thermometer - 25393
    SKU: 25393
    $29.94
    $45
    In stock
  • Save 34%
    Palintest Dpd 1 Tablet Reagent 25 Sheets of 10 - AT010
    SKU: AT010
    $13.05
    $20
    In stock
  • Save 34%
    Ocean Blue Deluxe Round Thermometer - 150015
    Ocean Blue Deluxe Round Thermometer - 150015
    SKU: 150015
    $22.35
    $34
    In stock
  • Save 33%
    Natural Chemistry Phosphate Test Kit, 10/Pack | 10081NCM
    Natural Chemistry Phosphate Test Kit, 10/Pack - 10081NCM
    SKU: 10081NCM
    $29.97
    $45
    In stock
  • Save 33% Out of stock
    Myron L Ds TDS Meter - 512T5D
    SKU: 512T5D
    $727.12
    $1,091
    Out of stock
  • Save 34%
    Lamotte Insta-Test 6-Way Plus Blister Carded, 50 Strips | 3028-BC-12
    LaMotte Insta-Test 6-Way Plus Blister Carded, 50 Strips - 3028-BC-12
    SKU: 3028-BC-12
    $22.44
    $34
    In stock
  • Save 34%
    LaMotte Salt Test Strip 10CT Insta-Test - 2998-12
    LaMotte Salt Test Strip 10CT Insta-Test - 2998-12
    SKU: 2998-12
    $24.85
    $38
    In stock
  • Save 33%
    Lamotte Colorq 2X Testabs Pro 7 Kit | 2087
    LaMotte Colorq 2X Testabs Pro 7 Kit - 2087
    SKU: 2087
    $263.37
    $396
    In stock
  • Save 34%
    LaMotte PRO600 Plus Test Strip 100CT Insta-Test - 3028-J-6
    LaMotte PRO600 Plus Test Strip 100CT Insta-Test - 3028-J-6
    SKU: 3028-J-6
    $33.42
    $51
    In stock
  • Save 33%
    Lamotte Insta-Test Pro Lr Phosphate, Multilingual, 50/Btl Lamotte Insta-Test Pro Phosph Test Strips 50-In-1 3021-H-6 | 3021-H-6
    LaMotte Insta-Test Pro Lr Phosphate, Multilingual, 50/Btl Lamotte Insta-Test Pro Phosph Test Strips 50-In-1 - 3021-H-6
    SKU: 3021-H-6
    $28.44
    $43
    In stock
  • Save 33%
    LaMotte 10-WAY Spin Disks Plus Borate 100/BX Waterlink Cl/br - 4330-J
    LaMotte 10-WAY Spin Disks Plus Borate 100/BX Waterlink Cl/br - 4330-J
    SKU: 4330-J
    $335.88
    $504
    In stock
  • Save 34%
    Lamotte Total Alkalinity Reagent, 30 Ml | 7039-G
    LaMotte Total Alkalinity Reagent, 30 Ml - 7039-G
    SKU: 7039-G
    $29.40
    $45
    In stock
  • Save 35%
    Lamotte Insta-Test Low Range Phosphate Test Strips | 3021-G-6
    LaMotte Insta-Test Low Range Phosphate Test Strips - 3021-G-6
    SKU: 3021-G-6
    $23.40
    $36
    In stock
  • Save 33%
    LaMotte ColorQ TesTabs PRO 7 Refill Kit | R2057
    LaMotte ColorQ TesTabs PRO 7 Refill Kit - R2057
    SKU: R-2057
    $70.62
    $106
    In stock
  • Save 33%
    Lamotte Salt Pocketester Calibration | 6005-J
    LaMotte Salt Pocketester Calibration - 6005-J
    SKU: 6005-J
    $31.89
    $48
    In stock
  • Save 34%
    LaMotte Ph Reagent, 30 Ml - 7037-G
    LaMotte Ph Reagent, 30 Ml - 7037-G
    SKU: 7037-G
    $24.99
    $38
    In stock