orp

I know that most reefers would recommend ignoring ORP, and to an extent, I do ignore it, unless I see a sudden change. I just turned on my UV sterilizer, running at about 400gph on a dedicated pump, and my ORP dropped from 230mV (I know, it's a bit low already) to 170mV. I thought UV would have...

So ORP, always an interesting topic. That said there appears to be some correlation to bacteria levels and ORP, and clean water. So that’s my concern of the unknown. My ORP is on a downward trend, what does one do. Is Cyano imminent? Diatoms? Is everything ok? What are your thoughts?

So I’m in the middle of switching from Neptune to Ghl and currently both are set up on my tank, but the probes are reading way differently the ph and orp probes to be exact, I went through and calibrated wash brown for each system and double checked with new calibration solution to make sure...

For ORP I found this - https://www.bulkreefsupply.com/pinpoint-orp-redox-400-calibration-fluid.html I assume it will work - even though it is not a Neptune specific product? For Salinity I know this will work -...

Selling 2, Neptune Apex PM1 modules that I used for a little over 2 years. No probes included, just the module(s). Asking $45.00 (for 1 module), or $75.00 (for both); which includes shipping in the Continental USA. No low ball offers please. Thanks for looking.

All prices shipped and payment via PayPal within the Continental USA. Neptune Systems Lab Grade PH Probe New - $50 Neptune Systems Double Junction Lab Grade ORP Probe New - $75 Neptune Systems Lab Grade Conductivity/Salinity Probe New - $110 XR30 Gen 3 Pro LED Modules New - $250 XR30/15...

So after reading Randy's excellent simple version of the guide to ORP, I get that ORP mostly is the battle between oxydizers and reducers. A reducer can be food, waste, dead things and probably a ton of other stuff. Would it be fair to draw a conclusion that Dino's killing microscopic things in...

Im thinking I must have a bad probe... that or something serious going on in the tank. I just hooked it up and to my surprise it was reading 43! I hooked up a micro-bubbler and it's slowly climbing up, but yikes. How was everything in my tank not dead if this was accurate? Fish seem fine, corals...

I've been doing research on ozone in the reef aquarium. I am well aware of the risk and dangers but also well aware of the benefits. I know I could just run carbon with a similar effect. I would like to know how people have there ozone set up? I have a sca 50 gal with appropriate sized stand...

So usually my ORP sits in the mid 300's for ORP but have recently noticed these sudden "dips." They are not necessarily at the same time every day and don't correspond to a dosing time. See below: All fish are accounted for and water chemistry raises no alarms. ORP is very hard for me to...