What a nice community, thanks for your time everyone.
Well, another characteristic of it is that when I tried to drill it, once the drill bar got around the center of the rock, the bar got completely screwed up so I highly doubt this is a man made rock.
As for the name of the rock I don't know the translation to English.
OK, so there is a way to know if this rock is adequate for a reef system... test it with white vinegar and magnet, if these tests are OK then I proceed to quarantine it for 8 weeks and test the water, what I need to monitor is
PH,
ammonia,
NH3+, NH2+, iron and
copper right? Do I also need to test for
phosphates? calcium?... gee I think I better go the safe route and get some reef grade rock like doctorthompson suggests, there are several LFSR that carries reef safe rocks, but like I said earlier, the goal is to make a zero impact reef. But i guess I'll have to bend the "zero" concept part just for the sake of security. what about lava rock?
I've already did the magnet test and guess what? it did capture some rock rubble.
I guess this rock isn't reef safe, is it? here's the evidence:
