I am wanting to make a simple natural filter to get back into action my son's 8ft pop-up pool for the New Zealand summer. (After we make a tub into a pond and relocate the frog in it). It is 2,300L (600 Gallon) capacity.
I have easy access to river sand, gravel and stones. Our hottest summer month has an average high of 23C (73F) so it will live inside a home-made greenhouse with lots of stones for thermal mass, and the water will be heated as well.
I am considering three options:
- a simple sand filter
- a basic aquaponic set-up, with heat-loving plants like capsicum - as the water we pump through its roots will be heated
- A water cascade with water plants in them similar to grey water tank filtration (hence this forum but feel free to cross-link if you know how or where)
Which would be best - or should a do a combination of all three, and if so in what order??
Any suggestions or links to really easy ones??