Equipment & Gear for reef and saltwater aquariums.
Nine reef tank gifts that get used, from coral viewing glasses and a magnetic frag rack to a mail-in ICP test and an auto top-off, each described from its maker's own page, plus the five things not to buy.
A buyer's guide to media reactors: fluidized vs. fixed-bed, why GFO needs a gentle tumble while carbon should sit still, sizing media to manufacturer guidance, and why testing — not a calendar — should drive your replacement schedule.
A winter buyer's guide to sizing a reef tank heater correctly, using named manufacturer wattage charts, two-heater redundancy, titanium vs. glass elements, and why a separate controller is the real guardrail.
Refractometer vs hydrometer for saltwater tanks: real-world accuracy, calibration, and cost compared, plus how to calibrate correctly for 35 ppt water.
Not every gadget earns its place. Here is the reef automation worth buying first — ATO, heater control, dosing pumps — and the jobs to keep doing by hand.
Digital reef testers vs titration kits: real accuracy and precision, cost per test, common testing errors, and which method best fits each reef parameter.
Wavemakers and powerheads for reef tanks compared — nano pumps, controllable mid-size units, gyres, and dual-pump kits — with turnover rules that work.
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.
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.
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.
