Getting started - NPT ponds

I'm planning to keep a pair of tub-ponds on our front patio. I need to stock with fish pretty much straight away because we live in an area where mosquito-borne diseases are rife. I plan to put some Blue-eyes in one and a fancy goldfish in the other (or maybe WCMMs).

I would like to have a try at NPT so I don't need any electricity. The patio has no roof but is shaded by shadecloth and some lovely trees - sunlight will always be filtered.

I've found some nice sized black plastic tubs at the hardware. Are there any problems using these I should be aware of - leeching colour, etc?

My current thoughts on plants are some java fern, anubias and moss, & perhaps some floating plants. I'd also like to try some potted plants rather than putting soil/substrate on the floor of the tubs. Dwarf papyrus would be nice and I would also like to grow some crypts and swords to supply my fish tanks at a later stage.

I feel a little bit lost as to where to start. I know I need the fish straight up, so I guess that means I need to add something fast-growing straight away too. If I bought the dwarf papyrus from the nursery how should I prepare the pots keeping in mind that I don't want ammonia leeching out and poisoning the fish?

Kylie