pond plants

Hi there as you may of see from a few other threads of mine, I am starting a 140 gallon 525-litre pond with the dimensions of 150 wide, 70 deep and 50 heigh (cm) this pond will be insulated and heated over winter I am going to get a few common or commit goldfish (not together) my question is how...

Title says most of it. I have a 300l goldfish pond, lightly stocked (3 fish) and under shade most of the time. The water is quite cold due to its outdoor setting and lack of heating, so I need plants that will withstand and thrive in these conditions. What species would work?