Thanks for all of the advice.
From the sounds of it I think that I will try one of the soft orange sponges. After allot more reading of course.

I am very excited to get some color in my tank other than the green hair algae and red flat worms that has plagued me for the past several months. The algae finally appears to be receding, and a FW dip should take care of the flatworms when I move. My tank can once again be a proud centre piece instead of a sickly shadow of its former self.

I have some of the encrusting types Canadian_Man and SamW speak of, except that I have blues, yellows, and lately I am noticing a magenta hue to some of them. Some of the yellow ones do start to get a shape to them, I have one in my 75g that's about half the size of a golfball, but fairly spherical.

Some of the yellow ones that popped up in my sump have been around for years. I have no idea how well the stuff transfers although I did give a piece to Tau2301 at the last Calgary meeting so I guess we can see if the stuff lives if it's taken out of one setting and put into another.

Some of the white stuff doesn't seem to fare well when out in the open. For example I had some on the underside of a rock, that got exposed when I moved the rock from one tank to the other (I was tearing down my 50g at the time). That one seemed to disappear. Whether this was because of sudden exposure to the light, exposure to air for a few seconds, or a lack of acclimitizing, or starvation, or whatever the case ... I haven't a clue.

i have a purple one and i dont know hwere it can from
it seems to be growing fine for me and i dont give it anything special

i have a purple one and i dont know hwere it can from
it seems to be growing fine for me and i dont give it anything special