A few weeks ago I provided an overview of the GHL KH Director and touched on some reasons why I went with that unit versus others in the marketplace. A primary factor was my positive experience with another GHL product, the Doser 2.1. I was also swayed by the KHD’s ability to read and then adjust dKH levels up or down.


GHL KH Director Alkalinity Monitor


Well, I wanted to peel the onion back a bit more and give you some deeper insight into why I believe the KHD was the right choice for me.


You see, I don’t like a lot of moving parts when it comes to keeping a reef tank since more equipment equals more variables, increasing the likelihood something can go wrong. Simplicity is good when it comes to a reef tank and it factored into my thinking when I chose an alkalinity monitor.

Is the Trident Worth the Wait?

I did consider waiting for Neptune System’s Trident since it has received a lot of buzz and will monitor calcium and magnesium in addition to alkalinity. But wait, do I really need to monitor all three on a constant basis? Heck, when I ran my 225 gallon SPS dominated tank I DID NOT TEST MAGNESIUM on a regular basis. Was that a smart idea? Maybe not but that is how I rolled back then.


ReefBum Reef Tank March 2011

What about calcium? Measuring calcium is certainly important but this parameter does not fluctuate much when I test it weekly with a Salifert test kit. Ditto for magnesium, no big changes on the rare occasions I test. The most critical thing to constantly measure is alkalinity, as large swings can impact SPS health.

The Cost Factor

Another reason to think twice about constantly monitoring calcium and magnesium is cost, as the price to replace three reagents will be higher versus one reagent. More work will be involved as well since more pump calibrations will be required over time to ensure accurate results.


And then there is the moving parts factor. Having more pumps, more reagents and more tubing will increase the odds something will fail. You do get less with the KH Director versus the Trident but, in my view, less is more when it comes to alkalinity monitoring systems.



One very important note to disclose, I now sell KH Directors but I only sell or recommend products I use personally and believe will be good for my readers. If you would like more information or would like to purchase a KHD please visit the Equipment section on reefbum.com.


Shop KH Directors Now



If you are looking for additional insights and information, please explore my many other reef tank and SPS related articles as well as my book, A ReefBum’s Guide To Keeping an SPS Reef Tank: A Blueprint For Success. Additionally, you can see all of my reef tank videos online now as well as my Live HD Webcam.


Happy reef keeping!


**Disclosure of Material Connection**
This is a “sponsored post.” The company who sponsored it compensated me via a cash payment, gift, or something else of value to produce it. Regardless, I only recommend products or services I use personally and believe will be good for my readers. I am disclosing this in accordance with the Federal Trade Commission’s 16 CFR, Part 255: “Guides Concerning the Use of Endorsements and Testimonials in Advertising.”