Any suggestions on a fully submersible heating apparatus I can use in a pcb etching tank that will go up to 50C?
I have been using aquarium heaters and they "work" but they only go up to 35C, which leads to long etching times.
Here, I bought couple of these heaters especially designed for bubble etching tanks. They can reach 55-60ºC -> 1x Kinsten Etching Plating Heater Eph 20 300W 110V Taiwan | eBay