so, as the title says i want to change my gravel for sand, but been looking around and there are different opinions about pool filter sand (silica) some say that is great, but others claim that it has chemicals, its abrassive, and afecct ph, so what you guys think about it? it is save for my polys?
if there is a alrady a thread that answer this sorry (please put the link), but didnt find it, thanxs
if there is a alrady a thread that answer this sorry (please put the link), but didnt find it, thanxs
