Reached a crossroads in a decision for my reef tank and never thought it would be about salt as it should instead be for some type of equipment as I have read people having great success with Tropic Marine Pro salt mix. I had been using Tropic Marine Pro but determined it was reason for my phosphate issue I had been chasing for awhile. Each batch I make tests around 0.14 ppm when the RO/DI source water tested at 0 ppm. This was adding up over time with each water change.

I thought the issue may be a problem with one batch of Tropic Marine Pro so I bought another box and it tested at same levels 0.14 ppm after addition to RO/DI source water tested at 0 ppm. This leads me to believe it is a Tropic Marine Pro which is adding excessive phosphates to my tank and not just from food.

I switched to Reef Crystals per discussions I had researched on Reef Central and based on target levels I wanted to keep for my SPS. After some time, I was able to get all parameters near targets and able to maintain over several months through only water changes and Kalk top off.

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