I didn't think that there was that great of a difference in fall between the two wells.
Not sure what you mean by difference in fall between the two wells? Can you elaborate?
A 4" well can produce up to 100 gpm. I think a holding tank might be your best (and least costly) option.
I think you may be right.
What I'm really excited about is I can build all of the components myself for the coldwater recirculating system except for a rotary drain filter, which I may not even need. This will save beaucoup bucks.
Even with Intex pools I can have a center and side drain (Cornell Dual Drain) (which is the best way to remove solids) as long as I put the center drains and cpvc airlines down before pouring the concrete. Ironicially this is what high end koi enthusiasts have been dong for years as in a bottom drain and skimmer.
I've had so much good DIY info from the Koiphen site it's amazing. I will be doing the same thing they strive for: growing out high end large fish with excellent water clarity as efficiently as possible as far as water use.
The Intex pools one of my board members is using are still going strong after 5 years and they are a heck of a lot cheaper than glass tanks! No issues with spines with trout. I figure even if they don't last more than 5 years I'll still be head by buying another one.
