Need some help from the experts because this question has me stumped. Have a customer who complained about a white web like substance growing on the gravel. They had tried all types of conditioners and medications and nothing worked. Recommended a better maintenance schedule(better than every six months) and stop dumping chemicals in. Comes back today and says they put the fish into a different tank, drained it, ran a bleach mixture through it, including filtration, replaced gravel and started over. White web like substance, her description, is back and growing across gravel and up the glass. Only new item is a java fern. I have several of them without any problems and they came from the same place. Any ideas?
