Ferrous Oxide Phosphate Removers

[Trewan]

Hi,

These products datas in europe are 60g of PO4 adsorption for 1 liter of material (data for product brand BIOPHOS which is also ferrous oxyde).

So I wonder why you reviewed with 0,03 ppm initial PO4 level? Its so low that it should be(for myself), very good to have such low level in the tank?

And with salifert test kit, 0.03 ppm is already undetectable.

Is there anything i misunderstood?

Regards,

Eric

 

[rharker]

I wonder why you reviewed with 0,03 ppm initial PO4 level?

Eric:

Orthophosphate around natural reefs generally measures about 0.01 ppm and the instructions that come with Rowa Phos state, "the phosphate concentration should always be kept below 0.015ppm." You may consider 0.03 ppm low, but ideally levels should be half that.

It is true that it is difficult to reliably measure levels that low with hobbyist test kits. As I stated in the article, at 0.03 ppm I couldn't detect any color with the Salifert kit.

Richard Harker