I've done a huge price comparison in the past and zeo came out cheaper every time. I run the base system... Zeobak, Zeo food, coral snow, amino acids, Start (on a dosing pump), and change my Zeolites every 3-4 months. My phosphate and nitrate levels are barely detectable, even when I skip water changes for a month at a time. For 300 gallons of water volume, my yearly cost is $300-ish and I physically dose twice per week.
I've tried bio pellets in the start, which did an amazing job on the nitrates. Phosphates rose and I noticed problems with my corals.
Prodibio was way too expensive for my tank. It came out to almost double of what I'm doing with Zeovit now. Also cracking vials and dumping stuff in is more clunky than unscrewing a bottle and squeezing stuff in.
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