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Old 09-26-2015, 12:11 AM   #1
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Simple, unique, auto top off

No pictures because I'm lazy.

This is a continuation of my last thread. I think you can find it via my username

Goal: auto top off system -- 0 risk of flooding, minimal space. 12 gallon long. Cheap.

Imagine:

Reservoir with in/out hooked to peristaltic pump

Pump inlet and outlet each have their own u-shaped glass bend over the tank. Set the output back into the reservoir. -- don't think too hard yet

Set the "input" u-bend entrance at the exact height you want the water level

Connect the pump to a timer

The pump runs every day, or twice a day, or once a week -- whatever you set it to

If the water level reaches that "input" glass u-bend. (Which is set to the level you want the aquarium). It will begin to pump water back into the reservoir. If the water is below that level, it will pump air into the reservoir, which is good, because that water needs to be replaced with something

Get it?

Zero risk of flooding

Less than 20 dollars

No sensor

No mechanical float switch thing

Easy

Simple

Cheap




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Old 09-26-2015, 08:52 AM   #2
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Can you please post pics? Sounds like a cool idea but hard to understand without pics
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Old 09-26-2015, 09:56 AM   #3
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Sounds good on paper! Make it so

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Old 09-26-2015, 01:28 PM   #4
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I'll put it all together once my stand comes in and share some pictures. Let me know if you see any holes in my theory.

Sounds impossible to mess up, really.


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Old 09-26-2015, 02:03 PM   #5
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So the return method involves a pump or overflow? I'd opt for overflow, if the pump runs dry it will likely burn out or worse start a fire.

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Old 09-26-2015, 02:09 PM   #6
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Sensored pump?

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Old 09-26-2015, 02:21 PM   #7
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No, peristaltic pumps can push air as well. There's no risk of it causing a fire.

No overflow either, it will simply suck in the same amount of water as it pushes out once the water level reaches the suction point


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Old 09-26-2015, 02:22 PM   #8
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The goal is to avoid sensors and keep it cheap and simple. No need for a sensor, just adjust the length of time as needed . Over time you will begin to learn how much water is evaporating each day


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Old 11-30-2015, 04:55 PM   #9
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just an update to let you guys know this design worked flawlessly. If there is any interest, I can share pics, let me know

I ended up using one tupperware, an aqua lifter, and some 1/4" tubing. I have myself a working autotop off that is virtually fail-proof
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Old 11-30-2015, 05:02 PM   #10
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Yes, pics please!
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