Automatic water change

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Sleepingtiger
Posts: 32
Joined: Fri Aug 30, 2013 3:50 pm

Automatic water change

Post by Sleepingtiger »

I did a search, but didn't really find what I was looking for. How do i code something when I go to water change mode, there is a series of events that is timed to complete the water change.

My idea is this, when the system goes to water change mode:

1) Immediately, RA shuts off sump pump (Port 1) for 30 minutes
2) 30 seconds after sump pump is turned off, solenoid is activated for 15 minutes (Port 2) and water is siphoned out of the tank into a drain. Water will automatically refill the aquarium because it is a float valve.
3) After 30 minutes, sump pump (port 1) is turned on. Dosing pump will then turn on (port 3) for 5 seconds to add dechlorinator to the ATO reservoir. A pump (port 4) will turn on for 3 minutes to mix the water in the ATO reservoir.
The whole process takes about 35 minutes..
Thanks in advance..

this is for a regular RA and its for my freshwater tank.
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