On the other hand, some water trumpets (e.g. Cryptocoryne beckettii) are very hardy aquarium plants, easy to grow to the point that they have become an invasive species after being introduced in Florida in North America.

[3] Cryptocoryne is either found in peat bogs or on limestone; the latter do well in most aquaria, the former must have soft water to survive and need decomposing beech leaf litter to do well.

Borneo is home to many endemic crypts previously thought to grow only in tea-colored soft acid water emulating peat bogs but exploration of habitats from 2005 to 2010 showed about half grew on limestone as well.

Some are true acid loving plants such as C. pallidnerva, found in peat bogs in Borneo, while others such as C. crispatula var.

New species still regularly crop up as interest in these plants widens and more collecting expeditions by private parties are carried out.

Rapid environmental change is thought to trigger this, as these plants do not seem to adapt well to transplantion, and may need 30 days or so to become established and for the leaves to regrow.

Other reports[5] emphasise the need to change the aquarium water regularly to prevent the buildup of nitrates which are thought to trigger this condition (often referred to as a disease).