Phosphate Remover Article

[Boomer]

I just saw this and no I did not read all of it but saw some comments on ORP levels. We do not care how high the ORP is, when not using oxidants to raise the ORP. These ORP levels or high limit ORP levels deal with using oxidants like Ozone, hydrogen peroxide or potassium permanganate.

Gob

all po4 media is a clay of some sort

No, PO4 media like Phosphate sponge, X-Phosphate are Activated Alumina which is Al2O3. Al2O3 is the gem mineral Corundum which has a hardness of of 9, just next to diamond. The "sponges" are artificial Corundum.

http://www.galleries.com/minerals/oxides/corundum/corundum.htm

Aluminum and aluminum-based phosphate binders
http://www.advancedaquarist.com/issues/july2003/chem.htm


These are clays
http://www.galleries.com/minerals/silicate/clays.htm


The iron based ones are Iron oxide hydroxide, also not clay.

The are forms of iron oxide like limonite or Goethite. Some clays may have high amounts of these oxides.

http://www.galleries.com/minerals/oxides/limonite/limonite.htm

http://www.absoluteastronomy.com/ref/limonite


Iron Oxide Hydroxide (GFO) Phosphate Binders
http://reefkeeping.com/issues/2004-11/rhf/index.htm

Some of these above can be altered to clay