Quote:
Originally Posted by Mr OM
The drawing shows using "dirty water" to force fresh into the system, therefore mixed water will go to the sump, or is there another idea you have in mind?
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no that's pretty much what's happening I think?
1) Display tank drains into the water change tank and water change tank drains into the sump. Everything flows as one system.
2) Take the water change tank off line (out of the loop) by turning bypass valves so that now the display tank drains directly into the sump.
3) Water change tank is now isolated.
4) Drain the water change tank, refill and mix with new salt water.
5) Now put the water change tank back into the system by turning the bypass valves back thus forcing the new salt water through the system.