Reefstead
Expert reviews, honest comparisons, and the best deals on Reef Aquariums — helping you make smarter buying decisions.
Latest Reviews
Best RO/DI Systems for Reef Water
RO/DI systems for reef tanks compared — 4-stage 75 GPD units, 5-stage dual-DI, compact apartment rigs, booster pumps, and the TDS meter that runs them.
Best Reef Test Kits: What to Trust Your Corals To
Reef test kits ranked by the job: alkalinity titration, Ca/Mg combos, digital checkers, master kits, and low-range nutrient tests worth trusting corals to.
Best Reef LED Lights for Every Coral Load
Reef LED lights sorted by coral load — nano fixtures, full-spectrum mid-range, high-PAR SPS class, black boxes, and bars — with PAR-first buying advice.
Best Protein Skimmers by Tank Size
Protein skimmers matched to your tank size — HOB nano, mid-range in-sump, high-capacity, and DC-adjustable — with honest sizing rules and break-in advice.
Best Nano Reef Tanks: AIO Kits Worth Starting With
AIO nano reef tanks compared by type, from 5-gallon picos to 32-gallon kits: which sizes forgive beginner mistakes, what kits leave out, and what to buy.
Best Dosing Pumps for Two-Part & Trace
Dosing pumps for reef two-part compared — single-head, 4-head programmable, and WiFi dosers — with calibration habits and the ramp-up that avoids overshoot.
Zoanthid Care: Colors, Growth, and the Palytoxin Warning
Complete zoanthid care guide: light and nutrient targets, feeding, pests, the morph market, and the palytoxin safety protocol every zoa keeper must follow.
Best Coral Fragging Kits & Propagation Tools
Coral fragging kits and propagation tools compared — starter kits, premium tool sets, frag racks, and dip kits — with the hygiene rules that keep frags alive.
Why Is My Saltwater Tank Cloudy? (4 Causes, 4 Fixes)
White haze, green tint, or dust clouds? Diagnose cloudy saltwater by color and timing, then fix the real cause — sand, bacteria, algae, or flow issues.
12 Best Beginner Saltwater Fish (Hardy, Peaceful, Reef-Safe)
Twelve hardy, peaceful, reef-safe fish that survive beginner mistakes, plus the popular species to skip, stocking order, and how many fish your tank holds.
Best Auto Top-Off (ATO) Systems
Auto top-off systems compared — optical-sensor ATOs, float valves, and dual-sensor alarm units — chosen by failure mode, plus reservoir sizing that's safe.
Why Does Alkalinity Keep Dropping? (Consumption, Explained)
Falling alkalinity means your reef is growing. Learn where alkalinity goes, how to measure daily consumption in four days, and how to match dosing to it.
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