Malachite green will kill shrimp and riccia, so all plants are not safe. I had a worm infestation in some of my tanks for I took some infested plants and a few ghost shrimp and put them in a tanks with the recommended dosage of malachite green. It killed the worms, the shrimp and the riccia.

Is malachite green safe for invertebrates?

It is used at times for other protozoan freshwater pathogens as well as marine Ich/Cryptocaryon. ... Malachite Green is deadly toxic to all marine and freshwater invertebrates, algae, plant-life.

Is malachite green toxic to snails?

Malachite green is an effective chemical treatment for fungal fish diseases and infections. The compound does not contain copper as many hobbyists believe. Malachite green is highly toxic. ... The compound will kill invertebrates such as snails and shrimp.