if the LR had been in someones tank for long it would of started getting a coraline covering on it wherever light hit it, anywhere that coraline had built up that was then deprived of light would of bleached but stil there would be a smooth white finish.
looking at the picks its not looking like that, pull a bit out and give it a good sniff, if it smells like nice, fresh ocean then that would be a good (but really not a sure) sign, if it makes you wanna heave then its one of a few things -
live rock that is curing (i dont think that is)
live rock that has died (as above)
reef bones or base rock that has been sat in water for a while.
testing for ammonia and nitrate is going to be a biggy mate, really you need those test kits.
if you want to keep corals then phosphate, magnesium, calcium, dkh and pH tests will be good to have aswell.
phosphate and nitrate will be good to know what your rock is aswell but my advice would be to buy some LR that is actually LR and put it in to get things going.
oh and get that filter out of the tank and replace it with a powerhead, it wont really do much for you except get bunged up, most of us salties do not use filters at all and those who do tend to use them for media canisters (rowaphos, carbon etc)
cuc wise look here a few pages in for donyas guide.
looking at the picks its not looking like that, pull a bit out and give it a good sniff, if it smells like nice, fresh ocean then that would be a good (but really not a sure) sign, if it makes you wanna heave then its one of a few things -
live rock that is curing (i dont think that is)
live rock that has died (as above)
reef bones or base rock that has been sat in water for a while.
testing for ammonia and nitrate is going to be a biggy mate, really you need those test kits.
if you want to keep corals then phosphate, magnesium, calcium, dkh and pH tests will be good to have aswell.
phosphate and nitrate will be good to know what your rock is aswell but my advice would be to buy some LR that is actually LR and put it in to get things going.
oh and get that filter out of the tank and replace it with a powerhead, it wont really do much for you except get bunged up, most of us salties do not use filters at all and those who do tend to use them for media canisters (rowaphos, carbon etc)
cuc wise look here a few pages in for donyas guide.