The Puffer Forum

The other day I was at my friends house and he just set up a tank with two crayfish,yellow chiclid,blue chiclid, and green terror and IDK a blue convict? Well anyways I was watchin the tank when all of a sudden a huge stream of bright florescent green mixture was swirling in the water. It looked like when someone makes water out of a highlighter and makes it glow under a black light. I asked him if he added something and he said "No". So what was this mystery fluid? its was neon green and its not like he has fancy lights embelishing it , just standard FW lights. Any ideas or seen this b4? Was it pee from the crayfish?