4000 gallons queni koi drum and jbr plastics bio chamber drum fed from bottom drain 3 inch gravity skimmer also into drum 55 watt submersible uv 240 litres air and 12 fishI
4000 gallons queni koi drum and jbr plastics bio chamber drum fed from bottom drain 3 inch gravity skimmer also into drum 55 watt submersible uv 240 litres air and 12 fishI