Products for pets are not required to tell you the ingredients, but they are required to have a Material Safety Data Sheet:
JurassiClean
Principal ingredients: An aqueous solution containing naturally occurring microorganisms, surfactants and colorants. Hazards: Excessive ingestion may cause nausea or diarrhea. May be irritant to skin and eyes. First Aid Measures: Skin/Eye contact: wash off with plenty of water. Ingestion: Rinse mouth and throat and drink water to dilute. Toxicological information: Component bacteria rare non-pathogenic and generally regarded as safe.
Since it's considered safe for reptiles, I would say it's probably OK for amphibians. Any traces of surfactant (=detergent) would be hazardous, of course, so rinse it really, reallly well.
In the future, I'd recommend using vinegar or a dilute solution of household bleach. Any trace bleach would be destroyed by the water dechlorinator that you're probably already using.