Hello,
I have a 135G freshwater tank that I'm trying to automate water changes. I have seen the optical water level sensors, and that is something I'd love to work with one day, but for now I'm just trying to workout the water removing aspect of the system. I have already plumbed a line into my tank with PEX using a thermostatic valve to get the temperature correct. I just use a shutoff valve to turn it on and off. It's been the best thing ever! The next step is adding a syphon that I can turn on and off with a switch. Any ideas how I can do this? I added a floor drain in, so currently I manually syphon the tank into the drain. What I want is a pump that I can hardwire with a switch (Or a plug is fine because I can wire a switch onto a plug). I want the intake and exhaust pump tubes to be roughly 1" diameter and the pump needs a 1 way valve so that the sewer gasses cannot come up through the tube when the pump isn't in use. Most freshwater folks simply don't go to these extremes, so I'm having a lot of trouble finding good information on reliable pumps.
Once I have that sorted out the next step is to automate using the optical sensors to refill and a timer on the pump.
Exhaust.jpg
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