Black fuzz

[BigYD]

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]

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]

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.

 

[BigYD]

It’s not only on the rock. Its on other things as well such as the wall. Would the snails them selfs do it? Where does it come from?