well from what i gleamed from the advanced aquarist (which by the way julian sprung contributes a few articles) is that if you are using phosguard according to instructions you will be well under the Al ppm
that Randy required to get those dramatic results. what i would like to know is if the Al ppm
continues to rise after more than one week of usage. i believe that kents product is the same or similar to seachems. so do the same results apply to kents product.
cannot say if phosguard is having adverse effects in my tank. i only know that the product has made dramatic improvements. though i would like to explore the ferric oxide hydroxide path. its just so expensive.