Tunze is Olathe 3155 question

[dmy535]

Tried doing a search on this but found nothing, my question is in regards to the Tunze ATO 3155. Anyways, just hooked it up in my sump. My ATO reservoir is lower than my sump, and the ATO line is raised up in the back of the tank stand to prevent a siphon back flow... anyways, the ATO turned on for the first time and filled for a few seconds and after it got the water to the correct spot it stopped like it should... but here comes the weird part, the water was still slowly trickling into the sump. I figured this was just a bit of left over water in the line and would stop once the water from the highest point dropped out but it just kept flowing. I had to try and stop the water flow myself. It’s throwing me off since the “siphon” is pumping up, and there would be no siphon created since the pump is lower but yet the water keeps flowing.... anyone have a clue here why the water would continue to flow after the pump turns off? I’m at a loss as to why this would happen...

 

[Reef Box]

If the end of the hose is lower than the water level in the ATO you will get a continuous flow until the water level in the ato matches the height of the end of the hose. try raising the end of the hose up above the ATO.. I used a small 90 degree elbow at the end of my hose to help

 

[dmy535]

If the end of the hose is lower than the water level in the ATO you will get a continuous flow until the water level in the ato matches the height of the end of the hose. try raising the end of the hose up above the ATO.. I used a small 90 degree elbow at the end of my hose to help

Thanks. That makes sense I suppose. Can you send me a photo of what you mentioned?

 

[Pistondog]

The fill end must be above the water to prevent siphon, or use a check valve.

 

[dmy535]

The fill end must be above the water to prevent siphon, or use a check valve.

It is above the water. The water flow is continuing from the ATO container into the sump after the pump turns off... the line goes up, then down because I assumed by having the line go up it would eliminate a siphon. But as @Reef Box mentioned, the water line is the issue. So I’ll have to raise the fill hose up but not create splashing which I am trying to figure out. In my situation, I don’t think a “check valve” would work here since the water is flowing in the direction I want it, it’s just not shutting off entirely.

 

[Reef Box]

Thanks. That makes sense I suppose. Can you send me a photo of what you mentioned?

I got it from an auto part place I think it’s used for the windshield washer set up I’m sure there are other options

This is another set up I use for my Refugium.

 

[Reef Box]

Can you let us know what the solution is once you get it fixed. So anyone with a similar issue can try the same.

 

[dmy535]

I got it from an auto part place I think it’s used for the windshield washer set up I’m sure there are other options

This is another set up I use for my Refugium.

Thanks for the photo

 

[dmy535]

Can you let us know what the solution is once you get it fixed. So anyone with a similar issue can try the same.

Yes for sure! First day with it! Keep you posted. Mainly seeing if your solution works! I’ll report back tomorrow

 

[dmy535]

And sorry for the title... tried to edit... but can’t figure that out and didn’t realize auto correct.... it’s supposed to be “osmolator”

 

[dmy535]

@Reef Box you were correct. I didn’t realize that the water level of my ATO was just about 3” higher than my sump so the drain line sat slightly lower than the ATO reservoir. I thought that running the hose up at the top of the stand would not create a siphone since water doesn’t like to generally travel up... but this was the issue. Put the hose up higher and it stopped after pump there off... only issue was splash... decided to bring the hose into a T fitting pvc attached at the back of the stand with a 1/2” pvc into the sump reservoir. This helps and creates 0 issues and no splash! I got the T fitting with the 90 degree so I can view inside. But this fixed the issues.

don’t mind the wires. After this fix, wire management is my next endeavor!

 

[Reef Box]

@Reef Box yoy were correct. I didn’t realize that the water level of my ATO was just about 3” higher than my sump so the drain line sat slightly lower than the ATO reservoir. I thought that running the hose up at the top of the stand would not create a siphone since water doesn’t like to generally travel up... but this was the issue. Put the hose up higher and it stopped after pump there off... only issue was splash... decided to bring the hose into a T fitting pvc attached at the back of the stand with a 1/2” pvc into the sump reservoir. This helps and creates 0 issues and no splash! I got the T fitting with the 90 degree so I can view inside. But this fixed the issues.

don’t mind the wires. After this fix, wire management is my next endeavor!

Awesome! I'm glad that worked out. Best ATO ever in my opinion.

 

[dmy535]

Awesome! I'm glad that worked out. Best ATO ever in my opinion.

I used to have the JBJ but I’m liking this a lot better so far!