I want to replace a Tetra submersible 50w heater that doesn't have a temp control with something relatively cheap but good. On Amazon there's a few options such has the Via Aqua here:
ViaAqua 50-Watt Quartz Glass Submersible Heater with Built-In Thermostat
The background of my tank is black so I'd prefer a black heater to blend in. I have a black Aqueon Pro 50 in my other tank but they're a bit pricey. Id like to stay under $20.