hi guys i am new been running my 125 gal for a year now i have crused coral and i keep having problems with cyano and this gray black stuff when i siphen and the sand is not white like it was when i first but it their
so the question is sand or no sand???? i would like your thought of this the pros the cons thx guys
so the question is sand or no sand???? i would like your thought of this the pros the cons thx guys