My second paludarium

Hi there,

Just finished the layout of my next Paludarium, it's time ton clean the tank and maybe add water (1/4), and later vampire crab, snails and shrimps.

There will be a waterfall on the left, i'm not sure about what plant i should put. Sure i'll add some Java moss. Maybe some floating plant to cover all the water area.

But i would like something contrasted between rocks and plants. Maybe with a canopee… but what kind of plant ? Maybe some easy to grow ?

Could you help me ?
(I also have a humidifier and a heating pad)

Oh and last question, is PUR foam risky ?

Thanks !!