Need to top up my water system every month.

embalse

embalse

embalse

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Its been a good 3 years since I built this system. I now need to top up my water system every month, but I can find not leaks.

Yes I know I should do a complete clean, but quite busy at the moment.

Just wondered if anyone else has had this issue. Its as if the water is evaporating.
 
How much are you filling up each month? It's normal for some to SLOWLY evaporate, especially with soft tubing that has thinner walls. Not used hard tubing so not sure if that behaves the same. By slow, I mean maybe no more than 1-2mm of a standard D5 diameter reservoir every fortnight or month with regular to heavy use. In summer I have to top up more than winter but even then, it's only every several months for several millimetres.

If it's a lot more than that then you have a leak somewhere.
 
There will be a slow leak from a fitting somewhere, are you using any rotary fittings? If you're using distilled water, there will be no stains either so its a hard one to trace.
 
Unless your system is pristine, even with distilled you are likely to see some form of staining but it may not be obvious until it leaks a lot. This is what happened to me. A slow leak from one of the radiator tubes that I didn't notice for a few months (I was being lazy and partly in denial to be fair). Didn't damage anything but it got steadily worse over time so I felt compelled to take the system apart to have a good look.
 
Glad to hear I am not the only one.
It is strange. I have been over every joint (glass tubing) with a fine toothcomb without finding a single leak, yet the distilled water is going down quite fast. Left for a month it needs to be topped up by at least 200ml probabley more.
 
200ml a month is a large amount
tie bits of kitchen roll/towel around anywhere likely to leak
works even better if you have coloured coolant as easy to see
and wait for some of it to get wet to narrow down the leak
had it once tiny leak where a screw near the edge of acrylic had been
factory overtightened leading to micro fracture
 
If it's 200ml a month then you have a leak, it's not even a maybe. The reservoir would have to be open for it to evaporate that much. You could sit a coin on the top of the fill port and it would evaporate less than that.
 
In side a computer case the air is generally hotter. Also the liquid itself is also warmer. So the rate of evaporation would be much higher than normal ambient temp water. Even a small gap would reduce water level fairly quickly.

don’t know what dye you put in your water, can you see any around any connectors etc? If so then that’s where the leak is.
 
surely it can't do that unless

1). A Leak
2). The loop is open and the warm water is evaporating... however even allowing for that, I'm amazed that much is going...

They're the only two things... have you confirmed both?
 
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What is wrong with wrapping a bit of kitchen towel around event joint, and running the pump at 100%.
That should help pinpoint the leak, if it coming from a joint.
 
The op has not updated on this thread for a while. We are all curious as the reason behind the 200ml loss a month. C’mom buddy give us something!!
 
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