and only $200 for the controller alone? I don't think MacGyver has that kind of money.

I wonder if a circulating pump would prevent the problem Lamar reports re: temperature drift?

I was all ready to develop my first C-41, or so I thought, till I realized my aquarium heater wont get me there. I've been trying to MacGyver my titanium ViaAqua aquarium heater but haven't had success. Even after maxing out the trim screw it can't maintain 103, and the adjusting post that the knob attaches to has an internal stop that I'm afraid to mess with. Being only 75 watt I'm not sure its powerful enough anyway. I need an alternative, cheap and fast. My chems are already mixed.

Quote Originally Posted by Chan Tran View Post
I use this controller

with this solid state relay so I can have it switches on and off very rapidly

I use them only because I have them on hand. A great number of others will work fine. Pricing about the same for simple one. Or you can buy the one that the OP used.