White mold on net pots
We have a Hydroponics system with fish, and are seeing a little what appears to be white mold on the rock wool in the net pots of some strawberry plants.
With the fish we really cannot use typical control for this or do we really know if it's mold.
One site indicated it might be salt deposits.
If anyone has had this issue love to hear what they think it is or what a solution might be.