Mixing your own saltwater at home means storing bags of salt mix, a mixing container, and a pump - or you can pick up pre-made saltwater, already mixed to the right specification for your tank type. RPM offers both a basic fish-only blend and a reef-grade mix using Tropic Marin salt.
Why Pre-Made Saltwater Saves a Step
Mixing saltwater correctly takes time - dissolving salt fully, letting temperature and pH stabilize, and confirming specific gravity before use. Pre-made saltwater is ready to go, saving that prep time on water change day.
Choosing a Mix
- RPM Saltwater - a basic saltwater mix, pre-made in-store and sized for fish-only systems that don't need reef-grade trace elements.
- RPM Saltwater Tropic Marin - a reef-grade saltwater mix using Tropic Marin salt, formulated for the more demanding water chemistry that corals and other reef invertebrates need.
Choosing Between Them
- Fish-only or FOWLR system? The basic RPM Saltwater mix covers standard marine fish needs without paying for reef-grade trace elements you don't need.
- Reef tank with corals or other invertebrates? The Tropic Marin mix is formulated for the calcium, alkalinity, and trace element demands reef life requires.
RPM Saltwater is available at Marine Concept Supply by the gallon in both formulas - order online or pick up at our shop in Wheeling, IL. Shop the Basic Mix or Reef-Grade Tropic Marin Mix, and browse more aquarium care products.
