Combo Pens/Meters

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  1. HM Digital Hydromaster Portable
    HM Digital Hydromaster Portable 716137
    $274.95 Special Price $193.45
  2. HM Digital pH / TDS / EC / Temp meter
    HM Digital pH / TDS / EC / Temp meter 716141
    $159.95 Special Price $111.95
  3. HM Digital HydroMaster HM-500
    HM Digital HydroMaster HM-500 716147
    $359.00 Special Price $245.90
  4. HM Digital Replacement pH Sensor
    HM Digital Replacement pH Sensor 716181
    $54.95 Special Price $43.19
  5. Bluelab Guardian Monitor
    Bluelab Guardian Monitor 716336
    $399.00 Special Price $299.85
  6. Future Harvest Grow Boss - Nutrient Monitor (4/Cs)
    Future Harvest Grow Boss - Nutrient Monitor (4/Cs) 716367
    $309.95 Special Price $216.95
  7. Nutradip Grow Boss TDS Replacement Probe
    Nutradip Grow Boss TDS Replacement Probe 716368
    $65.60 Special Price $50.43
  8. Sure Test Commercial Replacement EC Probe
    Sure Test Commercial Replacement EC Probe 716382
    $84.35 Special Price $54.84
  9. Sure Test Commercial Replacement pH Probe
    Sure Test Commercial Replacement pH Probe 716386
    $84.35 Special Price $54.84
  10. Sure Test Commercial Replacement DO Probe
    Sure Test Commercial Replacement DO Probe 716388
    $151.50 Special Price $113.73
  11. Sure Test Commercial pH / EC / TDS / ORP Lab Meter
    Sure Test Commercial pH / EC / TDS / ORP Lab Meter 716390
    $529.95 Special Price $342.99
  12. Sure Test Commercial Lab Meter Replacement pH Probe
    Sure Test Commercial Lab Meter Replacement pH Probe 716392
    $105.50 Special Price $68.48
  13. Sure Test Pro pH Pen Replacement Probe
    Sure Test Pro pH Pen Replacement Probe 716396
    $78.05 Special Price $50.70
  14. Sure Test Commercial Lab Meter Replacement ORP Probe
    Sure Test Commercial Lab Meter Replacement ORP Probe 716398
    $210.50 Special Price $137.08
  15. Bluelab Combo Plus Meter - Probe Included
    Bluelab Combo Plus Meter - Probe Included 716437
    $349.00 Special Price $262.35
  16. Bluelab Carry Case
    Bluelab Carry Case 716440
    $25.00 Special Price $20.00
  17. Bluelab Combo Meter
    Bluelab Combo Meter 716441
    $299.00 Special Price $224.85
  18. Bluelab Guardian Monitor Power Supply
    Bluelab Guardian Monitor Power Supply 716442
    $27.00 Special Price $21.90
  19. Bluelab Multimedia pH Meter (Leap Probe Included)
    Bluelab Multimedia pH Meter (Leap Probe Included) 716443
    $249.00 Special Price $174.90
  20. Bluelab Replacement pH Probe
    Bluelab Replacement pH Probe 716445
    $70.00 Special Price $56.00
  21. Bluelab PeriPod M4
    Bluelab PeriPod M4 716451
    $1,200.00 Special Price $840.00
  22. Bluelab Guardian Connect
    Bluelab Guardian Connect 716484
    $450.00 Special Price $315.00
  23. Bluelab Guardian Monitor Connect In-Line
    Bluelab Guardian Monitor Connect In-Line 716485
    $558.00 Special Price $391.50

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Same Day Pick Up

If you live in the Belleville, Michigan area, place your order by 1:00 pm and get it delivered to the store for same day pickup!