Bubble King questions, for you Bubble Kings.

[CAReefer]

I am trying to decide on a model of BK skimmer. I have been talking with Madison and don't want to overwhelm the poor guy.
Due to physical layout of my system I am looking at either the 300 internal, or the 250 ext. I currently have 250 net gallons and will soon be adding an additional 90 in a prop set-up.
Basically, I want to put the skimmer where the zeo reactor is since this is where the raw tank water drains.

When the internal models are tuned correctly, how much flow can be expected? I mean does it reduce by 20%, 30% or what? Since the 300 internal flows 1500 gph, and the 250 1000 gph. I only flow 1000 gph through my sump, so if I run a 300 internal, the settling/skimmer tank will empty faster than the overflow can fill it, and it would be a balancing act with the 250. What is the recommended gph feed for the 250 ext.?
And...
I need to know if the discharge pipe is high enough to make it over the 16" high sides of the two sump tanks so I can drain the skimmer into the larger sump section.

Thanks for the help
Marshal

[GTR]

Mashall...
I'll take some measurements Monday at my shop (that's where my system is set up).
Can't remember how deep my internal sets in the sump.
The flow on an internal model as you know really is not adjustable since if you change that you'll change the air intake at the same time.
I happy with the internal I have and can't imagine it doing any better though it might be possiple as an external.

SteveU

[Heinz]

The flow on an internal model as you know really is not adjustable since if you change that you'll change the air intake at the same time.

actually not, Klaus claimes that when you reduce the water intake with the nozzle at an internel model, the air intake will not change,

[GTR]

From what I see, the changes made with the intake screw are minor and more related to obtaining the correct flow as far as turbulance and bubble size. Very little changes in over all flow are being made.
That's not the case with an external, regardless of the skimmer brand. With the external skimmer in theory you can get the same bubble production with 50 gph or 1,500 gph.

SteveU

[OUinLA]

Marshall, can the skimmer overflow not exit into the same sump that is resides in?

[CAReefer]

It can, but I would like to remove skimmed water from the first tank to the second so no water gets reskimmed. I feel that is part of my problem with the ER I have now, no way to separate the processed water from the raw. With an external model it wouldn't matter cuz I would feed it directly from the overflow.