I have been growing HC emersed for about 6-7 weeks and it has gone quite well, up until this last week. I have kept water in the tank up to the level of the substrate (Turface MVP). The substrate dried out just a bit, now I have white fungus (kind of spider webby) that has taken out 2 clumps of HC. I am concerned that it will spread. The HC is growing with Glosso, Crypts and Lobelia cardinalis short form and all are doing great with the exception of the fungus. My thinking is to flood the tank a bit and drown the fungus, but I thought I'd check with y'all first. The HC seems well rooted now and has spread significantly. Any suggestions?