View Full Version : Regenerating PO4X4

Greg 45
12/10/2011, 04:24 PM
Has anyone regenerated this product.
It has worked well for me I think its time .
I cannot find any post on how to.
please advise.

12/10/2011, 04:38 PM
Hmm, regular GFO can be regenerated using lye. This seems to have a polymer added:


I don't know how to regenerate it.

Greg 45
12/10/2011, 04:48 PM
I purchased from scott trying to regenerate
some one had to do it already

Randy Holmes-Farley
12/11/2011, 06:41 AM
It is likely regenerated similar to regular GFO, but they give a description on their web site which entails using their secret powder. :D


Greg 45
12/11/2011, 09:13 AM
Randy is there a off the shelf product that i can use to regenerate with.
There product is very expensive.
I can replace product by the time i purchase the regenerater .

Randy Holmes-Farley
12/11/2011, 10:35 AM
I'd guess it is just lye (sodium hydroxide) whixh is inexpensive and what folks use to regenerate uncoated GFO. But they do not reveal what the polymer is, and I cannot be sure it is stable to lye. So if you try that, use a small batch at first.

Check out the long thread in this forum on regenerating regular GFO for directions.

Greg 45
12/11/2011, 02:10 PM
Thanks randy one bottle only does 750 ml of po4x4
that 30.00
500 ml of product costs 39.00
this po4x4 works 10x better than regular gfo in my opinion

Randy Holmes-Farley
12/11/2011, 03:45 PM
Well, someone is probably just coating a product like the BRS high capacity pellets, which also claim capacity substantially above normal GFO.

12/12/2011, 10:25 AM

A bit off topic, but since you bring it up... ;)

Are you aware of any evidence to support BRS' claim of increased capacity for this GFO?

I've found BRS to be a pretty trustworthy company, but marketing is marketing, after all....

Randy Holmes-Farley
12/12/2011, 10:45 AM
I've not seen evidence, no, but I expect they are buying various grades from the manufacturer that probably does give relative binding capacity. I have also seen some folks claim they get higher capacity in the higher capacity forms, but I don't know how reliable that is.

Carrying out tests of capacity is nontrivial and not generally a DIY test. I tried myself a few years ago, but it became too tedious.

12/12/2011, 08:29 PM
I use pO4*4 too, I added only about 50ml to a fluidized reactor, and barely run it. havent change for 6 month.... hanna test never gave a high reading above 5.

other part of fliteration will deal with po4 I think ? like live rocks, zeolite,skimmer