All you can do is try it. I'm sure it's pure GFO as advertised. Just an off brand. I do see what looks like better deals. I've always wondered about Laguna phos-X and have read posts of people using it and liking it. I believe it's popular in the UK.
All you can do is try it. I'm sure it's pure GFO as advertised. Just an off brand. I do see what looks like better deals. I've always wondered about Laguna phos-X and have read posts of people using it and liking it. I believe it's popular in the UK.
I asked this question, to the seller (Is this GFO as good as the Bulk Reef Supply brand?)
and he said this answer (Absolutely. They are basically indistinguishable.)