ATO hookup question

elegance coral · 09/06/2009, 02:26 PM

How do you hook up the float switches so that the RO/DI comes on when the water is just a few inches deep in the reservoir and shuts off when it reaches the top? I can only figure out how to keep the water at a constant level.

sedor · 09/06/2009, 02:38 PM

Depends on what ATO you have...

I use a JBJ ATO and it comes with 2 float switches and 3 different modes. If I remember correctly the 3rd mode allows you to do exactly what your saying. Only problem is an RODI isn't run by electricity so someone will have to chime in on how to get an ATO to open the flow.

elegance coral · 09/06/2009, 02:45 PM

Thanks for the reply. I can't find a manufactured ATO that will do what I want, so I'm buying parts to build my own. I can have the float switches control a solenoid that turns the RO on and off. I just can't figure out how to keep the bottom switch from turning the solenoid off when the water level begins to rise. I don't want the Ro to turn on every time the ATO pulls water from the reservoir.

sedor · 09/06/2009, 03:11 PM

Is there not a way you can get a controller similar to the JBJ that will tell the bottom switch that when it drops turn on solenoid until the top switch rises? Maybe a controller would be able to do this. I know the reefkeeper has a float switch accessory.

elegance coral · 09/06/2009, 03:30 PM

Thanks. I'll check into that and post back here.

09/06/2009, 02:26 PM	#1
elegance coral They call me EC Join Date: Apr 2007 Location: central Florida Posts: 6,208	ATO hookup question How do you hook up the float switches so that the RO/DI comes on when the water is just a few inches deep in the reservoir and shuts off when it reaches the top? I can only figure out how to keep the water at a constant level.

09/06/2009, 02:38 PM	#2
sedor Registered Member Join Date: Sep 2007 Location: Charlotte, NC Posts: 4,689	Depends on what ATO you have... I use a JBJ ATO and it comes with 2 float switches and 3 different modes. If I remember correctly the 3rd mode allows you to do exactly what your saying. Only problem is an RODI isn't run by electricity so someone will have to chime in on how to get an ATO to open the flow. __________________ Ryan

09/06/2009, 02:45 PM	#3
elegance coral They call me EC Join Date: Apr 2007 Location: central Florida Posts: 6,208	Thanks for the reply. I can't find a manufactured ATO that will do what I want, so I'm buying parts to build my own. I can have the float switches control a solenoid that turns the RO on and off. I just can't figure out how to keep the bottom switch from turning the solenoid off when the water level begins to rise. I don't want the Ro to turn on every time the ATO pulls water from the reservoir. __________________ "Most of the failures with marine aquaria are due to lack of knowledge of the biological processes that occur in the aquarium." Martin A. Moe, Jr. "A scientist seeks the truth, wherever that may lead. A believer already knows the truth, and cannot be swayed no matter how compelling the evidence." Current Tank Info: I'm trying to see how many tanks will fit in my house before the wife loses it.

09/06/2009, 03:11 PM	#4
sedor Registered Member Join Date: Sep 2007 Location: Charlotte, NC Posts: 4,689	Is there not a way you can get a controller similar to the JBJ that will tell the bottom switch that when it drops turn on solenoid until the top switch rises? Maybe a controller would be able to do this. I know the reefkeeper has a float switch accessory. __________________ Ryan

09/06/2009, 03:30 PM	#5
elegance coral They call me EC Join Date: Apr 2007 Location: central Florida Posts: 6,208	Thanks. I'll check into that and post back here. __________________ "Most of the failures with marine aquaria are due to lack of knowledge of the biological processes that occur in the aquarium." Martin A. Moe, Jr. "A scientist seeks the truth, wherever that may lead. A believer already knows the truth, and cannot be swayed no matter how compelling the evidence." Current Tank Info: I'm trying to see how many tanks will fit in my house before the wife loses it.