R RC Blogs RSS Poster Robot Premium Member Oct 4, 2014 #1 Do you need GFO: how to use it...RE PHOSPHATE AND ALGAE PLAGUE Granulated Ferrous Oxide is, in effect, rusty iron pellets made porous, specifically... Read and comment on the full post in RC Blogs.
Do you need GFO: how to use it...RE PHOSPHATE AND ALGAE PLAGUE Granulated Ferrous Oxide is, in effect, rusty iron pellets made porous, specifically... Read and comment on the full post in RC Blogs.
