#1
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ATO diluting salinity
On my 90 gallon system with herbie overflow I have been having issues where I cannot seem to match water coming down the drain with water going up into the display. The fluctuating water level in the return section of my sump is causing premature top off and is, therefore, diluting my salinity. Is there any solution to this?
Im running a JBJ Auto Top off system with a Aqualifter pump and my float switch is located in the return section. Has anybody else had this problem? Any insight would be appreciated, thanks! |
#2
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Something seem not right with your setup. I have 2 JBJ auto top off and never had a problem with any of them.
Why is the water level fluctuate in your sump??? Whenever I do water change or maintenance I turn my top off offline so that it does not continue to fill up fresh water. Quote:
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_________________________ More fish die from human stupidity than any other disease... |
#3
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Sounds like your overflow downpipe is not large enough to handle the volume your return pump is pushing.
How long has this been an issue? Is it possible you have the ato control in the wrong section of your sump? |
#4
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my durso overflow would do the same thing , i had 2 1 inch drains and a 500gph return and if i didnt tune the drains with air intake and choke valves they would pull full siphon and drain the overflow box then lose siphon and the return would pump the retun section way down . So you might just have to fiddle with it a bit.
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#5
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Do you have a Gate Valve? The Herbie takes some fine adjusting to exactly match the full siphon flow rate to your return rate. Once dialed in it should be steady.
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#7
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Quote:
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I would say maybe your salt level was wrong to begin with. Perhaps your refractometer needs calibration, or in the case of float style, maybe it's off by several points like mine was before I tossed it.
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My 70 Gallon build: http://www.canreef.com/vbulletin/showthread.php?t=66478 My Mandarin Paradise: http://www.canreef.com/vbulletin/showthread.php?t=72762 I wonder... does anyone care enough to read signatures if you make them really small? I would not. I would probably moan and complain, read three words and swear once or twice. But since you made it this far, please rate my builds. |
#8
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I meant if he does not have a gate valve and only a ball valve it will be very hard to make those slight adjustments. The Gate Valve makes life infinitely easier to find the sweet spot compared to the 1/4 turn ball valves.
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#9
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Wayne, I haven't setup my new Tunze ATO yet, but I remember reading in the manual that there is more than one way to set the on/off pump level by spacing the sensors further apart.
Have you checked your's to see if you can have the leeway you need? |
#10
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I have a gate valve on the drain pipe, not a ball valve. The herbie causes the level in the sump to fluctuate very very slowly but still enough to cause the ATO to turn on. Im assuming i just need to spend more time dialing it in and getting the flows to match up, thanks philg3.
I have a refractometer and it reads 1.025 after a waterchange and then a day later the salinity will be 1.024 or 1.023 so that rules out my refractometer needing calibration.. I don't think I can adjust much with this system. Its just a single float switch that turns a pump on when the float drops and turns it off when the float rises up. Maybe I will have to spend some more money and get a more elaborate system. The JBJ ATO is fairly cheap ($70). |