wow, good info, Dgasmd!
Just out of curiosity, what kind of herbivorous fish do you have? I am allowing a fairly significant amount of bryopsis to grow in my 80 gallon fuge, but both my vulpinus foxface and my purple and sailfin tangs love to eat it! It has not shown up growing in the display, though I sometimes give them a bit for a treat. They love it!
I used to post at ultimatereef frequently and rowaphos is all the rage over there. (england). I gather it is based on iron oxide rather than aluminum like most phosphate removing products in the states. Many people use it passively in a mesh bag or else they convert a chamber w/ very slow flow rates through it. I'm not sure why it's not readily available in the states because a similar product is used in some waste treatment facilities. I'm sure we'll see a version of this here soon.
That was really nice of Julian to give you all that product! man!
Seeya, Becca

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240 gallon glass mixed reef 2x 250 watt m.h., 2x 175 watt m.h., 3x 110 watt vho's.
55 gallon propagation tank, 2x 96 watt pc's
Empty 125 gallon tank
reefer girrrl!