Great Aquariums Start Here
1-800-566-3474
Live Chat Support
    Free Shipping On $175+
  • FREE Shipping On $175+
  • 14-Day Low Price Guarantee
  • 14-Day Low Price Guarantee
  • Same Day Shipping
  • Same Day Shipping
FREE Shipping on
Orders Over $175
Standard ground shipping (1-7 business days) starts at a low $5.99 and most orders over $175 ship FREE. Learn More
 
If you find a product we sell for a lower price at another online store, we will match their price—today and up to 14 days after you've purchased the item! Learn More
 
Same Day Shipping
We promise to ship your order as fast as humanly possible. In fact, 99% of orders placed before 6 pm EST ship the same day! Learn More
 

Aqua Medic Controller Refillable Electrodes

Reef Aquarium
Aqua Medic pH and ORP Refillable ElectrodesAqua Medic pH and Redox-potential Electrodes are quality products for accurate measurement, and have long, trouble-free operational use. Both are standard electrodes with plastic shafts.

Warranty: 1 year from date of purchase.


Electrode / Probe Holder with Suction CupElectrode/Probe Holders with suction cup are available as option.
Item #DescriptionPrice 
AL3111Aqua Logic 1/2 inch Diameter Sensor Probe Holder w/ Suction Cup (1 piece only)$2.49
CP2133pH 4.0 Buffer/Calibration Solution 500 ml$11.99
CP2135pH 7.0 Buffer/Calibration Solution 500 ml$12.49
CP2137pH 10.0 Buffer/Calibration Solution 500 ml$11.99

This item is temporarily unavailable but will be back in stock soon.

Item #
Price:
Click the Add To Cart button below if you'd like to reserve this item today. Any other items included in your order will be immediately processed and shipped. We will ship this item separately as soon as it arrives. We will not charge you for this item until it ships and you will incur no additional shipping charges.

Enter your email address in the field below and click the Notify Me button if you'd like us to send you an email when this item becomes available. Although you will be immediately notified when we have stock on hand, we will not reserve any units for you; you must return to our website and place an order.

Your Email:
Just enter your email address below and we'll let you know when the product you are looking for becomes available!

Item Code:
Price:
Your Email:
Email Specials
Subscribe to our newsletter feed.
Newsletter Tips & Tricks! New Products!
Discounts & Promos!
Testimonials
May 6, 2015
"First of all, the employees know their products and this makes a great service. Second they have good website: informative, easy to navigate and good information and videos. This makes it a good place for all kinds of people in the hobby."
Miguelo

May 5, 2015
"Good selection. I've found sizes other stores don't offer. The shipping prices are very reasonable. I save by shopping here. Very satisfied. Thank you."
Seaecho

May 5, 2015
"Being local means I usually receive my shipments the next day, regardless of the shipping type selected. MD maintains my purchase history, so even if I don't know the type of bulbs I need, or replacement parts, they have what I purchased previously on file."
Surftim

WIN A $195 RO/DI SYSTEM! Sign up for our best deals, expert tips and a chance to win a RO Junior w/ Dual DI System!