I planted the plants shown below in and around the main pond.

Nymphaea Mme Wilfron Gonnere Nymphaea Joey Tomocik

Sadly died during 1st winter

Golden Club Orontium Aquaticum

The Mirror Carp ate this plant and killed it.

Elodea Crispa (Nowadays known as Lagarosiphon major)
Umbrella Grass Cyperus Alternifolius (It is possible that the plant was labeled incorrectly and it is in fact C. Longus or C. involucratus) Lesser Reed Mace Typha Angustifolia

Prolific spreader.

Phalaris arundinacea 'Picta'

Another prolific spreader

Gunnera Manicata
Brass ButtonsCotula coronpifolia Mentha pulegium

Not very exciting

Nymphaea Gladstonaea Aponogeton Distachyum

Eaten by carp. moved this plant to the top pond where it thrives.