apu-apu is a type of ornamental plant that functions as a water purifier in fish ponds

apu apu-apu aquarium aquatic background beautiful beauty calm channel clean cleaning commonly decorative environment fish floating flora floral flower found fresh function functions garden green kapu-kapu kayambang kiambang lake leaf lotus natural nature ornamental outdoor pistia plant plants pond ponds popular protective purifier purifiers river stratiotes summer tropical tropics type types water waters wood