Originally Posted by Tank2379
Right now I would get what ever is going to work the best. What about Seachem? Is that a good brand?
That's an aluminum based media.
Phosphate and the Reef Aquarium by Randy Holmes-Farley - Reefkeeping.com
From the article....
"Aluminum oxide is the primary ingredient in several commercial phosphate binders, such as Seachem's PhosGuard™."
"Unfortunately, aluminum oxide is not completely insoluble in seawater. I have shown experimentally
that aluminum can be released from PhosGuard™, and I have also shown that adding the same amount of released aluminum back into an aquarium can irritate corals, causing them to retract their polyps and otherwise shrink."