Aqueon Submersible Glass Heater 300 W

Exact-model photograph is not verified. The full review shows Aqueon’s exact 300 W / UPC 015905000338 package image. It identifies the wattage-labelled package but does not resolve the manual-versus-package capacity difference or prove performance.

The TA300 is the 300 W configuration tied to Item 100528589 / UPC 015905000338. Aqueon’s exact manual recommends 65–90 US gallons, while the current page, package and 2025 catalog claim up to 100 gallons. Both source statements are retained; the reference uses the manual band and is withheld from matching because the current rule cannot enforce its 65-gallon minimum.

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Documented model details

• The current selector and catalog map the 300 W glass heater to Item 100528589 / UPC 015905000338, and the shared manual identifies its exact-size row as TA300.
• The TA300 manual recommends 65–90 US gallons. The current product page, matching package and 2025 catalog state up to 100 gallons. The full model review preserves this discrepancy and uses the manual’s 65–90 range for its conservative operating plan.
• The family page describes adjustable 68–88°F settings in one-degree steps, freshwater/saltwater use, a heat-on indicator, automatic shutoff when not properly submerged and shatter-resistant glass. These are manufacturer specifications, not independent measurements.
• The model instructions call for fully submerged in-tank use, circulation, the marked minimum-waterline, a 30-minute submerged wait before power and a 24-hour wait before adjusting the original setting.
• The manual identifies 15.0 inches as the TA300 overall length. The catalog lists item dimensions 1.375 × 1.375 × 15.25 inches and package dimensions 3.75 × 1.5 × 15.5 inches; the product page’s separate dimensions field is not defined as an installed clearance.

Limits to weigh

• The matcher cannot enforce the TA300’s 65-gallon lower recommendation. The model stays out of active finder and purchase matches rather than appearing as a fit for smaller tanks.
• The manual’s 90-gallon recommendation and the page/package/catalog 100-gallon ceiling conflict. The larger label is not substituted into the manual’s operating band or treated as a heat-performance guarantee.
• The body is described as shatter-resistant, not shatterproof; maker statements about thermostat increments and safety shutoff are not independent test findings.
• Exact package imagery identifies the 300 W variant but does not prove the seller’s delivered package, true installed clearance, electrical suitability of a particular receptacle or heating performance.

Check before ordering

• Check for TA300, 300 W, Item 100528589 and UPC 015905000338 on the offer and carton; verify the actual heater label and supplied instructions.
• Read both the model-specific manual recommendation of 65–90 US gallons and the package/page/catalog claim of up to 100 gallons. Do not silently treat the conflicting upper values as one settled figure.
• Confirm electrical compatibility and installation space from the actual unit and manual. Distinguish the manual’s overall length from catalog item and retail-package dimensions.
• Follow the marked waterline, circulation, waiting and adjustment requirements and use an independent thermometer; evaluate livestock needs and room-to-water temperature rise separately.