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Bluelab® pH Controller
Bluelab® pH Controller
Bluelab® pH Controller
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Bluelab® pH Controller

Marsoni M251S
Sale price$303.00
Pay 4 payments of $75.75 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
Bluelab® pH ControllerHands free monitoring and dosing of solution pH levels. Our clever pH controller automatically monitors and fine tunes the pH levels for you. You simply set it and forget. The pH is taken care of. For use with reservoirs up to 200 US gal 760 L. Plant safe green backlit LCD with adjustable brightness and large, easy to read display. Easy to navigate menu to program, adjust settings and calibrate by a simple push of a button. Flashing high low alarm
Easy Shipping

Quick Dispatch:

Your Bluelab® pH Controller orders ship within 1-2 business days.

Delivery Options:

  • Standard: 3-7 business days
  • Fast: 2-3 business days
  • Express: 1-2 business days

Order Tracking:

You'll receive a tracking link by email once your Bluelab® pH Controller ships.

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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
4.3 ★★★★★
Based on 584 reviews
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Product Reviews
M
Verified Purchase
Mark Liszkiewicz
Lexington, US
★★★★★ 5
nice quality
Size: 1.9" x 9.9" x 11.4"
I happen to be a fan of K&N air filters. Fit perfect in my vehicle. Seems like a much nicer quality filter than the cheapo filters from the parts store.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 7, 2026
G
Verified Purchase
gwpconcreteman
Los Angeles, US
★★★★★ 5
excellent product
Size: 1.9" x 9.9" x 11.4"
easy to install
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 21, 2026
L
Verified Purchase
Leyla Raymondo
Bozeman, US
★★★★★ 5
Great purchase!
Size: 1.9" x 9.9" x 11.4"
This has worked out quite well. I have had it since 2023 and have been cleaned thru about 6 maintenance schedules. It's been 2 yrs and it's in great shape. Worth every penny.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 21, 2025
O
Verified Purchase
OldMan
Los Angeles, US
★★★★★ 4
Really filters the cabin air
Size: 1.9" x 9.9" x 11.4"
K&N filters are always a cut above. Can’t say the same for service/support after the sale.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 31, 2026
R
Verified Purchase
Richard B
West Palm Beach, US
★★★★★ 5
quick and easy fit
Size: 1.9" x 9.9" x 11.4"
Instructions made it a very quick and easy fit
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 17, 2026

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