Black Algae AKA octomuck

[ill eagle]

Scenario: Growing in 3x3 Rockwool cubes. Starts as a light black haze turns to a slimy black gnat infested tar. Help.

 

[DaWiz]

Cover your rockwool from the light! Best way to solve this problem is too get away from using the Rockwool once the shit has a problem it will always have problems Rockwool is one of the worst growing meduims there is!!