Thing is, I might eventually throw in a mushroom or two eventually. Or rather, some type of not too fragile coral. I guess I'll have to think about it then ;P Having worked with biochemistry so long I honestly found it surprising that people are so eager to remove phosphates in tanks. I had just assumed that the only reason they did so was because they didn't want algae. Otherwise I can't see why people wouldn't want phosphate in the water, it's food for a lot of things.