How far does the water level have to drop before this turns on? Need something very sensitive so curious the sensitivity of this. THX
1172684
a little more than 1/4". Your salinity may flux a little. I have a 40 gal with moderate/high lighting and it kicks on every day.
1172685
I have my Tunze float valve in the rear pump chamber of a 29 gallon biocube. As long as I keep the float valve on the TUNZE clean, which can be difficult because of calcium and coralline algae build up, and the freshwater reservoir has water in it then water level in the biocube never seems to move up down at all. The float valve itself can only move up and down about 1/2 an inch, so in a small chamber thats not a lot of water volume before the float valves triggers the Tunze pump on or off.
1172686
I find that it is sensitive within about 3 or 4 mm range. I take it out once a month to clean, which may make the difference. I keep mine in the overflow box rather than the main tank, and it maintains the water level in a 16 gallon beautifully. My salinity measured across the day is constant so I guess it does it's job. Previous answer noted that it kicks on one a day, and I would add that it can kick on once an hour or two for me if it is super dry.
1172687
It's super sensitive, depending on the zone you put it in. In my biocube, I can take out half a cup of water and it will start filling. Maybe 1/4-1/2"?
1172688
The system has a floating sensor that will trig when water level drop about 1/4 if an inch .The only problem with this ATO it's that make sure that float sensor it's free of algae, salt or any calcium deposit .
1172689
I have two of these and they are very sensitive. I'd say the water level drops only 1-2mm before triggering the fill. On my setup (it's installed in the back of a 30 gallon ATO) that equates to maybe 1/4 cup of water between fills.
125219
I use a timer since I don't want to water continuously. If you prefer, you could manually turn it off and on. With the ability to have a small amount of drip hose, you could leave it on and check at first to see if it was overwatering.
587373
I have never let the level get more than 1/2 inch below the low water line, but it did not turn off. It did make a bit louder noise though, which is what brought it to my attention.
1783869
Mine worked under a foot of water for a while , maybe a few weekes and then died.
1322722
Tonight the low is 27. Will this switch turn on the aquarium heater I have in my pond when the temp drops to 35 and then turn it back on only when temperature in the air returns to 45? Why not just on and off at 35? Is his to provide an extra period of warmth to get well above freezing?
2027253
If there is no water in the incoming pipe the unit still turns off and on per the timer. I doubt there is any pressure sensitivity, and expect it will work on a rain barrel as the time simply turns a valve off and on.
1233452
There is a reset switch--try resetting. Mine is set up say 10 feet above ground
1534840
have mine running with a timer 20hr on, 4 off.lights too. the water is about the same as my room temp, it is 80 degrees in my room and the temp probe in the water says 81 degrees been running 12 hours now. they recommened 18 on 6 off. going to change my timer to that. had to make a new squirter pvc pipe 1 inch longer so it sprayed on the rockwool not below it? clones are very healthy. going to put AC in the room soon summer coming.
598478
Yes. Lower the water level a minimum of approximately 3-4 inches below the light.
1629795
I have never had an issue with water but mine are not that close to my sink. You could always add a touch of silicone to prevent water to drip down. If its that close to water make sure you install a GFI receptacle to plug it into.
724554
Clean it out completely and check cords. Also make sure there is water in it, If not it may slow down or stop without it. Mine did that, but after I cleaned it and filled it back up, it was up and running. I think it's because the water was too low. That makes sense to me.
542524
It won't shut power off if "water gets low", but it won't turn on heater if water is in designed temperature range. so it won't be over heated.
1753283
Shannon, It will go about 2 to 2 1/2 hours before it is automatically shuts down. Yes, there is a continuous setting. I have not noticed any wetness around the unit.
1546658
I would return it and ask for a new one. The one I received only turns off if I press the button or if the water runs out. I agree with the other answers about assuring the water level is not too high.
977799
Not sure, but rather than turn it off I set it at 40; so it can go at least that low. Not sure you'd want it any lower because the pipes would freeze!
2051569
It depends. Mine stopped once when my water level was too low. I would keep an eye on the water level
141721
That's gonna be hit and miss. Turn off the water and listen for the internal valve to "click" as you approach and adjust accordingly. If you don't already have the unit, that will be tough.