OK, but beware that one test per day is misleading. Before the Trident I always tested my Alk each day at 9:00am, and I thought it was pretty stable. After using the Trident I quickly realized how much Alk swings throughout the day. This Trident graph reveals the swings compared to my 9am daily tests (shown in red):
See my detailed thread on my Trident experience and how I used it to fine-tune my dosing schedule:
I received my Trident today and set it up. For full details, see this post in my build thread: https://www.reef2reef.com/threads/suncrestreefs-red-sea-reefer-xl-425-build.358990/page-31#post-6036364 Here's a photo of the inside mechanics of the Trident. I haven't seen this posted anywhere...
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