Simple Deluxe Submersible Aquari... vs AquaMiracle Adjustable 50W Aquar...

This is higher wattage for a bigger tank. The main body is titanium because it seems they hold up the best. The displayed temperature is within 1 degree as verified by my calibrated thermometer.

Overall, this aquarium heater performs better than expected at this price point.

Small and convenient heater for nano reef tank. Has a hidden filtration compartment and can be hidden behind plants. I love the small size and that it integrates visually so much better than other heaters.

Water level sensor keeps the water at the temp i set it to and always shuts off when it should. There's plenty of built in safety features like auto shutoff if the heater isn't fully submerged, but that can be annoying from time to time.

There still is a discrepancy between thermostat and thermometer, but only a few degrees now. There is a mostly consistent 7 degree difference. When you plug it in you set the desired temp and it will stick around that or from what i have seen about.

It only goes up, until it gets to 90s and then rolls back to 60s.