Gear Score Methodology
PetPal Gear Score
How to Protect Your Aquarium From Summer Heat (Monitoring, Fans, Chillers)
Editorial synthesis of aquarium-keeping authorities and manufacturer documentation. Temperature ranges and the dissolved-oxygen physics are attributed to Aqueon, Reef Builders (Jake Adams), Blue Fish Aquarium, and Rate My Fishtank; chiller sizing follows Bulk Reef Supply; the reef-controller ecosystem framing follows ReefBay. Product specifications come from each item's Amazon listing. No first-hand product testing — PetPalHQ does not run a testing lab.
PetPal Heat-Defense Score = (Cooling Power × 0.35) + (Automation & Alerting × 0.25) + (Running Cost / Efficiency × 0.20) + (Tank-Size Fit × 0.20)Factor breakdown
Cooling Power
35%How many degrees of real headroom the rung buys, scored WITHIN its rung so a $5 thermometer is not punished for not being a compressor. A monitor scores on early-warning value — knowing in time is its version of cooling power; fans score on honest, humidity-limited evaporative drop; chillers score on true refrigeration that holds a target regardless of the room. Per-product fit labels reflect this: the thermometer is a First-Look Fit, the fans are a Small-Tank / Mild-Bump Fit, and the chillers are a Hot-Room / Reef Fit.
Automation & Alerting
25%Whether the rung runs unattended and whether it warns you, ranked WiFi alert over local buzzer over none. This is where the WiFi Inkbird (Away-From-Home Fit) earns its place over the wired controller (Automation Fit), and where a bare thermometer loses ground it makes back on cost.
Running Cost / Efficiency
20%What the rung costs to run, stated plainly. Thermometers and fans are effectively free to operate; a controller draws outlet standby only; a chiller carries a genuine compressor bill that a reader should budget for before buying. No 'was $X' framing appears anywhere here — every price is a live, non-deal capture.
Tank-Size Fit
20%How well the rung matches gallons and livestock, with reef tanks held to a tighter target than freshwater. Small-to-mid freshwater and mild reef tanks are served by fans; chronic-heat, reef, and no-AC tanks are the chiller's Hot-Room / Reef Fit. The scores are a composite of expert opinion and manufacturer documentation — PetPalHQ does not run a testing lab.
See all score methodologies on the Gear Score index.