Review on 🐠 Quartz Glass Submersible Heaters for CNZ Aquariums by Leah Jackson

The outer packaging of these heaters is pretty good (wrapped in a thick layer of bubble wrap), but the inside of the box, which contains the heater itself, allows the heater to move vertically. I ordered a set of two 50w units and both came with the quartz glass broken. The lower part of both heaters was broken. I knew something was wrong when the packaging made it sound like it was a Lego toy when I picked it up. On the other hand I've ordered two packs of 200w units and they arrived in great condition and seem pretty reliable. Cons: * The packaging of the heaters is of poor quality, which poses a risk that you cannot use the heater when you receive it. * Difficult to determine what value you set when setting the temperature. * The power cord is quite short. Pros: * cheap * slim