Titanium users know just how hot these heaters can get while in operation – especially versus glass heaters, but that rapid rise in temperature can cause its own issues internally. Thinner and much longer than existing models these 5/8” thick slimline heaters come in similar wattages from 100 to 600 watts, only the positive temperature coefficient material incorporated into them will help to limit their electrical resistance as the heater body warms up.

Heater manufacturer Schego showed off a new PTC titanium aquarium heater at Interzoo 2022.