Auto water change

I use an auto waterchange system. I have a 55gallon mixing station that is plummed into my apex DOS and setup to change 1 gallon a day. The old water goes into my drain from my washing machine. You just need to calibrate it and the rest is history.
 
Can someone teach me how to build a auto water change? Thank you and please!

All you need is a dual head pump (or two pumps you can closely match in rate) and a timer. :) being able to adjust the flow a bit for each independently is a plus.

On the same timer, one pumps water into the tank from a new salt water reservoir, and the other pumps it out to a drain.
 

IF YOU HAD TO TAKE A REEFING EXAM, WOULD YOU PASS?

  • Yes!

    Votes: 32 45.7%
  • Not yet, but I have one that I want to buy in mind!

    Votes: 9 12.9%
  • No.

    Votes: 26 37.1%
  • Other (please explain).

    Votes: 3 4.3%
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