Dono:
Cecil has put a link up before about a "Small Scale Aquaculture" book. If you can find it and get it, it will help immensely. Short of it is, it's not the number of fish in the tank, it's the weight of the fish per gallon of water in the tank. When you size your filtration system I believe it's sized on the pounds (or Kg) of food that you'll be feeding instead of the amount of fish that you have. IIRC it's always sized for the most amount of food you think you'd be feeding, plus some for a buffer.
Much more to it than that!
I don't see this rig in the video as being suitable for YP, nor much more than Tilapia.
Only looking at one issue here, and there may be a few more ?
If anyone can accurately pin point the slow death issue here and fill in the blanks as to why? Then you can hit the PB mall on my dime!
Answer has to deal with fish other than sewer fish.
Bruce is excluded from this. I gave him the answer. Yeah, but did he read the manual
