I own a company that cover everything from joinery and building to landscaping and ponds. This pond was built a couple of weeks ago and hasn't had the most expensive kit involved in the construction of the filtration, but it has the Oase Skimmer box, the Tetra Watefalls filter, using Lava Rock as medium including the foam filter.
The tubing is high grade 1 & half inch tubing with Hose lock between the pump and UV Light not a large Uv light just the small version. We leave the hose lock on around the 1 and quarter inch turn so the flow down stream is not to fast. I forgot to take image when first filled it up, but it was murky and these items working together have cleaned the pond up excellent.
The customer cannot believe the difference from old pond to this one and the clarity of the water. Now granted she hasn't got that many fish, but I am purchasing her 3 11 inch Koi as she lost her large one through stress of moving into temp home and somehow managed to jump and get past the wire covering the temp pool. But even with the new fish it will still handle them and be as clean as it is now.
Owner had me in bits the day after I finished as she loves her fish and sent me tex saying the Heron had been and wiped them all out even the favourite gold fish..... I was like nor, then I get call saying they where all under the fish cave i made for them, incase Heron did come thank god. This product is awesome product but takes a while to arrive and I cannot understand why it is not in UK.....?