Group prayer on Skype on behalf of our Christian members

[The Grand Nudger]

My problem has always been knowing what to use it for. Something like selecting the stream of water which caused the less disturbance. Would you want to minimise / maximise the flow of water for Koi?

Both..a variable problem!  You need to maximize the overall flow of water into and out of the main containment area to create a minimum exchange rate of a full containment volume of water an hour.  However, the rate of flow has to be split and reduced in order for sumping or baffling clarifiers to separate the solids and reduced further still to allow a liquidized biofilter to handle the ammonia load.  Then it has to be sped up again to offgas and create substantial dissolved oxygen by the time it returns to the containment.

-and that;s just the flow rate issue...the tiniest of all of the issues involved if you want monstrously large fish. None of the best numbers are set, they;re all based on the weight of the fish and the rate of feeding (and whatever effects both of those things have on other components in your system).

Your ann..could be used to seek out and then enforce a maximized water and feed management system while -being- part of the physical system, and changing as the requirements of the fish change. It would be a herculean lift, but you might be able to get it to do the thinking and the work for you, in response to the living elements of the system. If it were me, I;d shuffle off as much of that work as possible on other living elements, but that introduces a bunch of babysitting life in exchange for less work/calculation...and im sure you know how volatile and unpredictable that can be, lol.

(and if you do it, and if it works, and if you ever get the itch to patent anything,. I demand exclusive distributorship over your tech!, I will pay you handsomely, forever.... lol )

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Now, if the flow gets too low, at any point, or the suspended solids get too high, the whole system goes anaerobic.  If it goes to fast, the fish choke on their own urine.  If the water is too warm then you will have to increase the rate of feeding..increasing the filtration load....but it it goes to cold the fish will cease to grow (and big koi can go months without eating).  This one you can play with for effect.  If there are too many small fish the ammonia will spike relative to their identical weight in large fish, and if there are too many large fish then the small fish will starve on account of not being able to steal grub from moby dick.  

-on and on the list of solvable problems goes......