i will be setting up a pond, it is a pallet bin 48x44x25(19" water depth) with two 1.5" overflows merging to a single 2" drain that will be going to a 80g sump, return is 1" splitting to four 1/2" returns. i would like to keep some koi, although i know this will not be large enough for life by far, more of a growout, perhaps 3 koi starting at a small 3-6" size?
so what flow rate should i be shooting for?
should i put a heater in for the winter time?
for the sump i was thinking drain into a filter sock, and having fully submerged bio media for maximum water volume(sump completely full of water and bio).
any other things i need to know, or is it basically the same as indoor tropical aquaria, just colder?
thank you for your time, never done a pond before!




so what flow rate should i be shooting for?
should i put a heater in for the winter time?
for the sump i was thinking drain into a filter sock, and having fully submerged bio media for maximum water volume(sump completely full of water and bio).
any other things i need to know, or is it basically the same as indoor tropical aquaria, just colder?
thank you for your time, never done a pond before!




'
.