white powder growing?

unless you have a lot of corals you won't need to dose regular, only bring you parameter in line every once in a while if they get off. your saltmix will provide enough nutrients for all but heavily stocked tanks.

you definitely don't want to dose with out testing for what your dosing.

if you dose with out testing you may poison your tank

im giving this warning to try to rule out your having calcium percipitation. have you tried touching this white powder does it move around like a powder or are you pretty sure its a animal?

 

its actuali powder... if i wave my hands on it... its goes awy...
atm ders none left... i waved ol of it... does all salt mix have iodine and calcium??? because i actuali buy my saltwater... i dnt do da mixing my self... is this gud or bad???