Simply Koi and More Koi

thanks for all your info

which is the best media ? and which do you use out there

hi i have a trickle tower lying about its about 2 foot round and 5 foot high and return is a foot above cone to drain ,i have piped it in now to trickle in over bio balls and then rise up in eazy pod and return to pond on three inch gravity .would it be best to leave balls in or take them out as the...

are they any good then more feedback