I have a friend who owns a Koi farm, and grows many plants in a slurry of fish manure and water in his greenhouse. The plants grow to enormous size in this fish manure slurry. I've given him a variety of elephant ears in the past and some do well in the water, and others don't . Can anyone with experience growing these plants in water let me know which ones will grow well in water and which ones won't? I don't have enough pups of all of them right now to experiment. Thanks much!

Colocasia 'Chicago Harlequin'

C. 'Rhubarb'

C. 'Fontanesii'

C. 'Big Dipper'

C. 'Gigantea'

C. 'Coffee Cups'

C. fallax 'Silver Leaf'

C. 'Black Marble'

C. 'Pink China'

Xanthosoma 'Jacquinii'

X. Violaceum 'Blue Stem'

X. saggifolium

Alocasia 'Portei'

A. 'Calidora'

A. 'Plumbea'

A. macrorrhiza

A. 'Odora'

A. 'Hilo Beauty'

Alocasia x portora

So far the ones we've experimented with that thrived were C. esculenta, C. Illustris, C. Black Magic, C. Black Runner, C. Black Ruffles, a runner taro, and X. Lime Zinger. Xanthosoma 'Mickey Mouse' has not done well in the slurry.