I had the wrong type of fish pond in mind, when I opened this. I've got a fish pond but it's about 1 rai !! It's a bit empty at the moment, just waiting for a couple of more downpours to fill it, never have problems with plants, they just grow naturaly in it. Going to stock about 500 Pla Duk, 500 Pla Tap Tin or Pla Lat, then mabye 10-20 Pla Chon in a month or two's time