ph probe

Hi, I would like to know if is worth the money getting an expensive ph probe or is better to use a cheap one and change it every 6 - 12 months.

So I tried being a responsible reefer today and decided to clean and recalibrate my pH probe. Well afterwards the reading is now significantly off. My pH is usually 7.9-8.1, my pH probe is now reading 7.47. It’s strange because when I have the probe in the different calibrating solutions...

I have two Neptune double junction pH probes. Both were calibrated at the same time. One probe will go in my calcium reactor, the other in my sump. Right now though, the probes are in the same compartment in my sump, but read different values: 8.18 and 8.30. When I noticed this, I re-calibrated...

While I don't necessarily need a dosing pump for an aquarium, I believe that they could work for my applications. Basically, I have what is called a bioreactor. It is a small beaker where a mixture gets fermented. This bioreactor requires some sort of Ph Control. I've got some Ph Probes with a...

Everything is in EXCELLENT condition and works perfectly. Bought it on 12-07-16 from Bulk Reef Supply & have the original receipt which I will send & the original packaging. Best offer is $475.00 for everything below / More Pixs to come. Includes Classic Apex Base Unit Controller 1. Apex...

As the title says: what is the best/fastest way to clean the pH probe without damaging it? I'm currently soaking it in 50/50 rodi/white vinegar for several hours.

I wanted to run a CO2 reactor on my 20 gallon sps reef, but have decided to stick with two-part instead. I'm selling the reactor, ph probe, and CO2 cylinder from that setup. These are very lightly used--only one month. If you can pick up the CO2 cylinder it is currently full. Otherwise it...