first hello to all new here i am starting to build a pond for koi the pond will hold 990 gallons and i was going to use a yamitsu mega max black box with 30w uv and a yamitsu 1600 pump would this set up be ok any advice would be great .
thanks
a.burnett
Well when it comes to filters you want to go as big as you can and money alows so if your pond is going to be 990g you need a filter that can filter about 2000gallons when it come to koi and with a turn over of about once an hour. So in the end you would have a filter that would do double the amount of water in the pond and a turn over rate of about 1000g an hour. But if you have not started yet look in to a bottom drain and gravity fed filter or you will regret it latter hope this helps
filter and pump help 
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