hello,

so a few months back I built my first pond it's 5x5x2foot

it has an iris and the tall thin round grass. the iris is going Yello, grass okay. water is a heavy green (pea soup)

I'll be getting a small water lily on Monday from garden centre as they now ha e them. as I know these help lessen the light in pond and thus reduce algae.

I have been looking into ways to filter it, I have learned that mechanical filters just removes it by trapping the 'crap' where as a bog garden will use it to grow.

how deep should it be? I was thinking soil 10" deep and 2inches on water ontop to make it a foot deep?

so I hqve a 10x10 foot pond liner left, I have read pea gravel, I don't have any at moment but would hydrolica drayway gravel, potting grit all these okay to use?
how much sun? where pond is its in sun all summer but shade in winter, so plants that can cope with shade too,
I'm in an area that can have light and very sever frost so hardy would be great. are there any hardy carnivorous plants?

ideal plants that I can just leave

any any problems that I may have would also be appreciated.

I'll upload image of area when I get to me mum's.