Saltwater Aquarium Equipment Checklist: What You Need to Start a Reef Tank

Starting your first saltwater tank can feel overwhelming. There's a wall of gear at the fish store, a hundred opinions online, and a real worry about spending money on the wrong thing. At Tropical Treasures in Cheyenne, we walk new reefers through this every week, so we put together a no-nonsense equipment checklist to get you set up right the first time.

This guide covers what you actually need to start a reef tank, what's nice to have later, and a few things you can skip. Want to talk it through with a real person? Give us a call at 307-369-1118 and we'll help you build a list that fits your budget.

The tank and stand 🐟

Bigger is usually easier with saltwater. A larger water volume is more forgiving of mistakes and keeps your parameters stable. For a first reef, a 20 to 40 gallon tank hits a sweet spot between cost and stability. Make sure your stand is rated for the full weight of water, rock, and glass.

Filtration and flow 🌊

Saltwater tanks run on live rock and good water movement more than on heavy mechanical filtration. Plan on roughly one to two pounds of live rock per gallon to handle biological filtration, plus one or two powerheads to keep water moving so detritus stays suspended and corals get the flow they crave. A hang-on-back filter or a simple sump gives you a place to run media and a skimmer down the road.

Heater, salt, and water 🌡️

You'll need an adjustable heater sized to your tank, a quality marine salt mix, and RO/DI water to mix it with. Tap water introduces nitrates, phosphates, and metals that fuel algae and stress corals. We carry salt and water-prep supplies, and many local reefers fill up on RO/DI right here in the shop. A refractometer to check salinity is a small purchase that pays off forever.

Lighting 💡

If you want corals, lighting matters. A basic LED fixture works for a fish-only tank, but reef-capable LEDs give corals the spectrum and intensity they need. Match the light to the tank size and the corals you plan to keep, and don't feel pressured to buy the most expensive unit on day one. For the full picture, see our reef lighting basics guide on The Tank Buddy Blog.

Testing and dosing 🧪

You can't fix what you can't measure. A good test kit for ammonia, nitrite, nitrate, pH, alkalinity, and calcium is essential while you cycle and beyond. Once corals are growing, you'll start replacing calcium and alkalinity, which is where dosing supplements come in. Browse our test kits and supplements and ask us what's right for your setup.

Nice to have (later) ✨

Once your tank is stable, upgrades like a protein skimmer, an auto top-off, a controller, and a quarantine tank make life easier and your reef healthier. None of these are day-one purchases. Add them as your budget and confidence grow.

Is a reef tank right for you? 🤔

A reef tank rewards patience and steady habits more than a big wallet. If you enjoy a little weekly maintenance and the slow payoff of watching corals grow, you'll love it. If you want zero upkeep, start with a hardy fish-only setup instead.

The bottom line

Start with a solid tank, live rock, good flow, a heater, clean water, and reliable test kits, then add the extras over time. Stop by Tropical Treasures in Cheyenne or call 307-369-1118 and we'll help you put together a checklist that fits your space and budget.