Hi bros out there, im asking this on behalf of my friend who's interested in keep koi, he would like to know
-is a 3.6m x 1.6m x 30cm pond good enough for koi ? What he is worried about is the height. Will it be high enough for them?
-what media for filteration is required for koi?
-what's the ideal pump size for the pond?
Bros with experience in keeping koi pls help. Thanks alot.