Could you scrape a little, crush then dust any open area in DT(with 0 flow for a while)?I think my ship has finally come in! I was mucking around in my 135 stock/rock/algae-filter/sump tank this past weekend looking for a perfectly shaped rock to fit into an open spot in my DT's rock wall. And Woo Hoo! I came across a rock with green coralline algae growing on it! Now I just need to figure out how to propagate it. Or maybe I'll just sell it as is to RU$ALTY for a big credit bundle.
On a curious note: my previously mentioned stock/rock/algae-filter tank also has a rock with some neon pink sponge growing on its underside. Unfortunately, it hasn't grown much that I can see since the time I first discovered it many years back. Maybe I should I break up the rock and put a piece in a Nannochloropsis grow out system...