In my 3 week old aquarium I found some B. plumosa growing on my live rock and decided to boil it (none of the corals were attached yet). I had a small diatom outbreak a week before that was gone by then. The day after boiling it a diatom outbreak is growing fast. Could it be that boiling the rock caused it to start releasing silicates to feed them? (Phosphates and nitrates are zero or close to it. I have no fish and only some softies right now.)