9010 water level?

[Mavrk]

It is clear that if you use the "in-cabinet" setup (with the pipe attached), then the water level needs to be between 4 and 11". However, here is where my confusion starts.

If you go with the "internal" setup (without the pipe attached), the directions are not as clear. It says that the water level should correspond with "the data of the unit (6)". Figure (6) points at the blue squiggly line. Now what I don't know is if they mean to keep it at this level for this kind of setup, or does it simply mean you should not go higher than this.

The second question is what is the advantage of using the "in cabinet" setup. I thought it was mostly for use if your water level was below the 11" mark. But if my understanding of this whole thing is wrong, then that doesn't make sense. Does the pipe help in some way?

Any help would be greatly appreciated.

 

[rvitko]

The pipe keeps the water level at roughly 11" since the water can only exit from the pipe which is about 11" high. Without the pipe the water level should be within an inch of the marked water line which should be considered the maximum.

 

[Mavrk]

So the pipe doesn't have any advantage besides being able to use the unit in shallower water?

 

[rvitko]

The pipe keeps a constant internal water level and a full 100% flow through. When used without the pipe 20% of the water is recirculated internally.

 

[Mavrk]

<a href=showthread.php?s=&postid=11026448#post11026448 target=_blank>Originally posted</a> by rvitko
The pipe keeps a constant internal water level and a full 100% flow through. When used without the pipe 20% of the water is recirculated internally.

Not to beat a dead horse, but given the above would you recommend using the pipe if possible? Or is teh 20% recirculating a good thing. My setup allows me to go either way in my sump.

Thanks for the help.

 

[rvitko]

The skimmer is marginally stronger with the pipe but it is not a huge difference.

 

[Mavrk]

Thank you for the information.