Equipment we'd actually buy

Industry-standard programmable LED. Strong PAR, full spectrum control via mobile app, and the Hydra ecosystem is well-documented across the reefing community. Two of these will cover a 4-foot tank for SPS-dominant builds.

Ballpark price: $400–500

Dense, focused light beam with that signature Kessil shimmer. Simpler controls than AI (just two knobs — color temp and intensity), which some keepers love for hassle-free reefing. Best for tanks 24 inches or deeper.

Ballpark price: $400–500

Strong value pick — full-spectrum LED with built-in controller, comparable PAR to fixtures twice the price. Covers larger tanks per fixture than the Hydras or Kessils.

Ballpark price: $200–350

Entry-level LED that handles soft corals and low-light LPS in nano tanks. Will not grow SPS or demanding LPS — plan to upgrade if your stocking ambitions expand. Good first light to learn the hobby on without a $400 commitment.

Ballpark price: $60–100

The reef hobby standard for controllable flow. Magnetically-coupled (no cord in the tank), wirelessly programmable, and reliable over years of continuous run-time. MP10 for nanos, MP40 for most reefs, MP60 for >150 gallons.

Ballpark price: $400–500

Cross-flow design that creates a horizontal wave pattern unlike any propeller pump. Excellent for reducing dead spots in long, shallow tanks. Quiet, controllable, and a real value vs. the Ecotech pricetag.

Ballpark price: $200–300

Non-controllable but bulletproof. Stack two or three of these for whole-tank flow at a fraction of the Ecotech price. Best for keepers who don't need programmable flow modes.

Ballpark price: $30–50

Plug-in temperature controller with dual outlets (heat and cool) and adjustable hysteresis. The single highest-leverage purchase you can make — turns any cheap heater into a controlled, safer heater. Pair with reliable heater elements below.

Ballpark price: $30–40

The classic reliable heater. Glass-tube design, German build quality, runs for years without drift. Buy two at half your needed wattage and put them on an Inkbird. Most common failure mode is gradual decline, not catastrophic stuck-on.

Ballpark price: $30–50 each

Shatterproof composite housing (no glass to break), built-in thermostat, slim profile. Some keepers prefer this over Eheim for the safer enclosure. Still pair with an external controller as backup.

Ballpark price: $50–80

BRS's in-house system. Well-documented, replacement filters universally available, and BRS will troubleshoot directly if anything fails. The default starter recommendation in the reef community for a reason.

Ballpark price: $170–220

Higher production rate, larger DI canisters, longer filter life between changes. The right pick for tanks 100+ gallons or for keepers running multiple systems. Builds last 10+ years.

Ballpark price: $300–450

Solid mid-tier alternative to the BRS unit. Includes a second DI stage by default, which extends resin life noticeably. Less ubiquitous than BRS but well-built.

Ballpark price: $200–280

Workhorse in-sump skimmer rated for tanks up to 120 gallons. Quiet pump, consistent foam, and the parts ecosystem is mature — replacement impellers and gaskets are universally available. BRS doesn't carry Reef Octopus, but Saltwater Aquarium does.

Ballpark price: $280–350

Surprisingly effective for the price. Rated for 80-gallon tanks at moderate stocking; under-claim it and it punches above its weight. Good first-skimmer pick for new reefers.

Ballpark price: $150–200

Top-tier build quality with conical body and high-efficiency cone design. For keepers building flagship 150+ gallon systems or running heavy bioloads. Premium price reflects premium consistency.

Ballpark price: $500–700

Digital colorimeter for alkalinity. Eliminates the guesswork of color-matching reagent kits. Test takes 90 seconds, reagent costs ~$0.50 per test. The single most useful testing purchase for a coral keeper.

Ballpark price: $50–60

Detects phosphate down to 0.01 ppm — critical for SPS-dominant systems where standard reagent kits can't read low enough. Pair with the alk checker for the core duo.

Ballpark price: $50–60

Refillable reagent kits for parameters you don't test daily. Magnesium, calcium, and nitrate are the standard purchases. ~$0.50 per test once you have the kit. Long shelf life unopened.

Ballpark price: $15–25 each

Bundles alk, calcium, and magnesium reagent tests with high-precision dropper bottles. A solid alternative if you want one box that covers the core three without buying a Hanna checker.

Ballpark price: $60–80

The reef community's gold standard for stability. Consistent batch-to-batch, dissolves clean without precipitate, and provides ideal trace element ratios out of the bag. Worth the premium for SPS keepers.

Ballpark price: $80–120 / 200g bucket

Higher alkalinity, calcium, and magnesium levels formulated for coral-growth systems. Slightly more variable batch-to-batch than Tropic Marin but a strong mid-tier pick. Available everywhere.

Ballpark price: $70–100 / 200g bucket

Long-running budget salt that produces a viable reef baseline. Mid-range alkalinity and calcium; trace elements less consistent than premium options. Works well for fish-heavy or soft-coral builds where ultimate stability is less critical.

Ballpark price: $60–80 / 200g bucket

Digital salinity reading without the optical guesswork. Single-button operation, calibrates to a $5 35.00 ppt calibration fluid. Worth the upgrade from an optical refractometer if you can swing it.

Ballpark price: $70–90

Standard optical refractometer with brine-line calibration. Accurate when calibrated against a known 35 ppt solution (NOT distilled water — that's a common beginner mistake). Tip: calibrate monthly.

Ballpark price: $30–45

The reliability benchmark. Optical + magnetic sensor combination prevents most failure modes. Quiet 12V pump. Built to run continuously for years. Worth the premium for anyone with significant coral investment.

Ballpark price: $220–300

Compact and effective for nano-to-medium reefs. Single optical sensor with built-in safety timeout. Good value pick for tanks under 60 gallons.

Ballpark price: $80–120

Two-part cement for building stable rockwork structures. Lets you create overhangs, caves, and unconnected formations that would be impossible with stacked rock alone. Sets underwater. Every serious aquascape uses this or equivalent.

Ballpark price: $40–60

Cyanoacrylate gel for attaching coral frags to rock or frag plugs. Sets in seconds underwater. One tube lasts months of casual fragging. Reef-safe.

Ballpark price: $10–20

Don't laugh — used constantly for target-feeding LPS, blasting detritus from rockwork, and acclimating new inverts. Get the silicone bulb kind, not the rubber ones (rubber degrades in saltwater).

Ballpark price: $10–15

Cleans the front glass without ever putting your hand in the tank. Flipper and Magnavore are the established brands; size to your glass thickness. A scraper edge for stubborn coralline is the key upgrade over basic magnet cleaners.

Ballpark price: $30–60