Rather than using aluminum oxides for phosphate reduction, Phosban is made of ferric oxide hydroxide. Aluminum oxides does remove phosphate, but isn’t ideal for a reef tank because it often leaves enough phosphate in the water for nuisance algae and it contains aluminum.
Phosban is completely ree safe and won’t release anything!
It binds nearly 3x more phosphate by weight than wet ferric hydroxide adsorbents.
Phosban ships dry which makes us save on shipping and there are no cautions about its storage.
Flow rate is important with phosban. It will not receive enough flow by having it in a media bag. Not enough flow will cause it to “clump up” making it less efficient. For that reason, you should definitely get a phosban reactor. A reactor allow you to push about 80-90 GPH through the phosban which is I think the best flow rate.
They recommend 1 gram for each gallon of water. It’s a hard to tell how long it will last. Each tank is going to need changing at differing intervals. To make things easy, change the media when your phosphates begin to rise again.