Wow!  Sounds like an awesome setup!  Nice detail as well.  The only thing
that jumps right out is the sea swirl.  Can you try turning it off and see
if that does the trick?  Maybe just a shot in the dark...

Craig


> The pump is an Iwaki 100 RLT that runs the whole system.
>
> I have a 30 gallon sump that holds about 15 gallons of water. There are
> various bubble traps in the sump including a tray, a couple of angled
walls
> and a couple of straight walls. After going through the traps, it ends up
at
> the far end of the sump, where the input to the pump is. The input is run
> through a 1 inch bulkhead that is threaded on both sides. The bulkhead is
> about 2 inches off the bottom of the sump, and is covered by about 5
inches
> of water. The side of the bulkhead that is in the sump also has a 1 inch
> elbow that is pointed down towards the bottom of the sump which puts the
> actual input of the pump about a half inch off the bottom of the sump. It
> then runs into the barb, through the flex tube, into another barb, into
the
> pump and out.
>
> The output is reduced directly from pump to 2-half inch flex tubes. The
> reduction is through a 1 inch T that is threaded onto the pump, and then
has
> the 2 reducers in the 2 ends of the T.   Those 2 half inch reductions are
> then split various times to run various things. The left side runs into my
> chiller and out to a sea swirl. It also has a split that right now, runs
> nothing, but is going to run my chemical reactor. The right side runs my
Red
> Sea Berlin skimmer plus 2 outputs. The skimmer is in the sump, but the
> outputs of the skimmer run back into the top where it then has to run back
> through the bubble traps before it gets to the sump pump.
>
> The input to the pump is through the sump. The outputs are in the main
tank,
> but the overflow runs back into the sump and through the bubble traps. I
do
> not see any bubbles in the sump where the input is. I have placed
fragments
> of live rock around the input to see if any bubbles collect, and none did.
>
> See anything I should try differently?
>
> TIA
> Shane C.

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