What if i am using small quantities of ro water? won’t using only ph down bring it down drastically? since there is no ph up, would it just stay stuck

You can set the drip time on/off settings. The pump is the same used in hospital settings. While ph fluctuations is normal, this product will control it for you. Keep in mind that you can only set it up to add ph up or ph down, not both. My ph tends to naturally drift up, so I have the controller set to add ph down. The volume of the solution it can control is in the product description details.

What is the width of the ph probe?

Hello there! The width of the pH probe is 12 mm in diameter. Cheers!

Is this distributor legit? This item sells for $400 minimum everywhere else. $575 in stores. I need this model.

I had the same concerns as the rest of you. I bought it and totally happy that I did. If paying an extra 150 bucks or more for the same exact product is what gives you piece of mind. Then go spend the extra money. The mindset of you get what you pay for is not always correct. Not when comparing the exact same product at different prices. It’s not like the blue lab ph doser. It isn’t a competitor. It is literally the exact same product. Since most people that use this product is for pot. If you sell the same batch and amount of pot to two different people at two different prices, do you get what you pay for? Or are both people buying the exact same thing, just at a different price.

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⚡ Take control of your pH game—precision dosing, nonstop monitoring, zero guesswork!

SMART AUTOMATED DOSING - Intuitive on/off dosing cycles with replaceable pump for hassle-free pH adjustments.
ROUND THE CLOCK CONTROL - Continuous 24/7 monitoring with high/low alarms keeps your system perfectly balanced.
TRUSTED INDUSTRY LEADER - Made in New Zealand by Bluelab, backed by a 2-year limited warranty.
PRECISION LAB GRADE MONITORING - Glass probe ensures accurate pH readings for acid or alkaline solutions.
EFFORTLESS CALIBRATION COMPENSATION - Easy two-point calibration plus auto temperature compensation for flawless accuracy.

The CONTPH pH Controller by Bluelab is a professional-grade device designed for precise pH measurement and automated dosing in various solutions. Featuring a lab-quality glass probe, 24/7 monitoring with alarms, easy calibration, and a replaceable peristaltic pump, it ensures optimal conditions for pools, hydroponics, brewing, and more. Manufactured in New Zealand with a 2-year warranty, it’s the trusted choice for serious growers and professionals.

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TrustScore 4.5 | 7,300+ reviews

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Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

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Color	Blue
Size	1
Style	pH Controller
Height	7.72 inches
Length	8.15 inches
Width	4.21 inches
Material Type	Plastic
Number of Items	1
Power Source	Corded Electric
Batteries Included?	No
Brand	Bluelab
Manufacturer	Bluelab Corporation Limited - Import (NZ)
Item model number	CONTPH
Product Dimensions	20.83 x 10.67 x 19.56 cm; 447.02 g
ASIN	B00O9CBYZ0

Bluelab CONTPH pH Controller with Monitoring and Dosing of Solution pH Levels

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