Did the previous owner really have 'too much'...as in, more than 2lbs per gallon of tank capacity?
I'm one of those people that likes the look of live rock, but there's the other camp that hates how 'ugly' it is, and they tend to use a lot less rock than they should (at least, if the LR
is for primary bio-filtration).
For all I know, you're right, and they had too much live rock...but I just can't take the chance that you're misinterpreting how much rock you should
This is my 40gallon tank, with 65 lbs of live rock. Its just about perfect in my eyes.
Now all of that aside, if you do have too much, you could still use it for LR
rubble in a sump or fuge. Otherwise I'd sell it to another hobbyist or an LFS
, because if you let it die, its nothing more than a piece of base rock, and its value drops about 300-500% (from more than $5 per pound to $1 per pound).
If you still wanna keep it dead, let it die first, for a couple weeks, then scrub it. When the stuff dies it'll be easier to scrub off.