What's eating my cryptocoryne nurii?

Cryptocoryne nurii, a rare Malaysian Crypt, is vulnerable to environmental melt (Crypt rot) triggered by water changes or instability, and to snail grazing on its patterned leaves. Herbivorous fish will uproot or eat the rhizome. Algae is a secondary threat on slow-growing leaves. Stable, soft acidic water is the best defence.

Holes rasped through distinctive patterned leaves; larger snail species consume whole leaves Remove large pest snails by hand; use snail traps; Nerite snails are safe companions

Leaves nibbled to stubs; rhizome dug up and left floating House with small, peaceful fish only; anchor rhizome with aquarium-safe weights or stones

Persistent green spots on leaf surface restrict light absorption; difficult to remove mechanically Balance phosphate and lighting; Nerite snails graze green spot algae effectively