I will never forget to turn my pumps back on after feeding

[jlfnjlf]

Just a DIY I did for a pump interrupt timer.

http://reefcentral.com/forums/showthread.php?s=&threadid=939039

 

[sinaloa213]

so when you turn the timer knob the pumps turn oof and a couple secs later they turn back on ?

thats the coolest thing ive ever seen
its cool to see what diy's people come up with

 

[Justin74]

Double postage

-Justin

 

[Justin74]

That's cool John That can be really helpfull for soo many things. Im all for set it, and forget it!

-Justin

 

[jlfnjlf]

the knob is for up to 2 hours I prefer about 30 minutes so I only turn it 1/4 of the way.

 

[WarrenG]

Those timers are also available in a 15 minute version-commonly used with bathroom vent fans. Also in 30', 60', 120', 12h, 16h. Most of these durations are available at Lowes, HD, and OSH.

You can connect them so something will be off for a period of time, or on for a period of time.

 

[jlfnjlf]

But they may not be SPDT. They are normally open and are closed by the turning the knob. when the time is up the contacts reopen turning off what ever device it was running. The SPDT timer has a normally closed circuit as well, so when you turn the knob it opens the circuit until the selected time lapses. Two hours was the shortest time I could find in a SPDT configuration.