We have every been there. It is 2:00 AM, and you are staring into the deep blue serenity of your SPS Reef Tank in imitation of a flashlight. You are looking for a sign of life, but instead, you see a patch of white upon your prize Acropora. Your heart sinks. I have spent thousands of dollars upon high-end lighting, Einstapp flow patterns that mimic the Indonesian coast, and the most expensive skimmers allowance can buy. Yet, for months, I struggled in the same way as the most basic element of reef tank chemistry. I could not keep my magnesium levels stable. I was guessing. I was "eyeballing" my liquid magnesium doses based on inattentive forum posts. It was a recipe for disaster. That is until I finally leaned into a tool I had ignored for far too long. This is my honest, slightly chaotic, and ultimately well-off tab of My Personal Experience subsequent to The BRS Magnesium Calculator For My SPS Reef Tank.

Lets be real for a second. Most of us obsess exceeding alkalinity and calcium. We treat them in the manner of the king and queen of the aquarium. We check them daily. We have high-tech dosing pumps dedicated to them. But magnesium? Magnesium is often the forgotten middle child.