Black fuzz

BigYD · Feb 9, 2023

Hi, I'm new here and I have a 20-gal saltwater tank. one day I spotted some black spots and it started to spread. I went to my local fish store for advice, but he could not identify it. now it's starting to get out of hand and i have no idea what it is. it's not a slim or Ciano. I have a clown fish a Pj cardinal and exquisite fire fish Aswell as a toadstool, I need help and help fast.

vetteguy53081 · Feb 9, 2023

BigYD said:
Hi, I'm new here and I have a 20-gal saltwater tank. one day I spotted some black spots and it started to spread. I went to my local fish store for advice, but he could not identify it. now it's starting to get out of hand and i have no idea what it is. it's not a slim or Ciano. I have a clown fish a Pj cardinal and exquisite fire fish Aswell as a toadstool, I need help and help fast.

Looks like a substance known as lyngbya and you will need to place the rock in a container of tank water and scrub it off with a firm toothbrush and return to tank
After- add chiton, astrea and ninja star snails to help with control

Fishman718 · Feb 10, 2023

It happenned in my tank before. I throw away the stone. Im not sure about a toothbrush. Some creatures in salt water could be spread if you destory it.