|
To prevent fry from being sucked into the intakes make a prefilter out of reticulated open cell foam. One needs to correlate the gallons per hour and the surface area of the foam to avoid having the fry trapped against the foam itself. Please note that one can utilize reticulated open cell foam as a biological filter. Used in this manner, a foam augmented system contributed to a 13% increase in body mass at five weeks.
The inflatable pool seems a convienent idea but is problematic. Most vinyl liners have an algaecide added to its formulation. This will eventually will leech out but will be toxic to the koi. My guess is that it will kill the fry, given enough exposure.
If the pool is of insufficient mass, temperature fluctuations will occur depending on ambient temperature and wind conditions. Ever changing temperatures add stress to the fry resulting in stunted growth and a lower immune responses.
Mark
|