Hello all - glad I found this forum. I recently completed a 1200 gal outdoor pond that I plan to stock with 3-4 fancy goldfish and a couple of Koi. Also will have 10-15 assorted potted plants. My question is in regards to filtration - will a Tetra PUV-4000 - (18 Watt UV - 4,000 Gallons) paired with a Tetra DynaTec 1500 gal/hour pump be enough filtration or would one be wise to supplement it. Thanks for any advice or general tips.