Riser tubes setup for Alphacool Eisbecher Aurora D5

[kubko]

Hi, I'm at stage of loop preparation for my upcoming build so I'm trying to figure out best component setup.

Specifically, I want to ask about Alphacool Eisbecher Aurora D5 250 Acetal/Glass reservoir. It comes with shortest riser tube installed on its top and shorter tube on the bottom. I know they are designed for that light tower water effect, but I wonder why do some people swap one of the tubes with the included extra longest one? Does it have any benefinit in certain setup, affects bubbling or what is the reason people swap them? I plan to use it with outlet at the bottom and water coming back through the top of res. Thanks for the explanation

 

[Eddy]

If you have the shorter tube on top and it doesn’t reach into the water, you’ll get a fountain effect. A longer tube on top extends deep into the water, even if the reservoir is only half full. When water flows in from above, it creates bubbles in the water. However, this is mostly irrelevant. Honestly, I don’t see any real advantage in swapping the tubes—unless you specifically want to avoid the water effect. You can also leave out the top tube entirely; in that case, the water will simply trickle in. Because of the tube length and the bubble-down design at the bottom, it doesn’t really matter as long as the reservoir is reasonably full. It’s even slightly better for flow. The effect does slightly reduce flow, of course.

 

[kubko]

If you have the shorter tube on top and it doesn’t reach into the water, you’ll get a fountain effect. A longer tube on top extends deep into the water, even if the reservoir is only half full. When water flows in from above, it creates bubbles in the water. However, this is mostly irrelevant. Honestly, I don’t see any real advantage in swapping the tubes—unless you specifically want to avoid the water effect. You can also leave out the top tube entirely; in that case, the water will simply trickle in. Because of the tube length and the bubble-down design at the bottom, it doesn’t really matter as long as the reservoir is reasonably full. It’s even slightly better for flow. The effect does slightly reduce flow, of course.

Got it, in that case if I won't like the fountain effect I could just swap out the top tube with the longest one.

So the bottom tube length practically doesn't affect anything and there's no benefit to different size here right?