We are also considering creating some or all of our substrate from extra
LR
by pulverizing and grinding it up then placing it in areas of the tank to
simulate natural reef sand bed accumulation.
Anyone tried this?
What method worked best to convert your rock to sand? (We already have a
sledgehammer :-).



=0

From what I have read, I really don't think that would be "very" beneficial.
Not when you consider the work involved to grind it up fine enough.

If you have "extra" LR why not put it up for sale?

I am sure several people would be interested, myself included.


Lastly, How reliable or chemical water treatments for reducing chlorine,
heavy metals, and other impurities from tap water for SW tank use?

Thanx.

Mark and A



As Marc said, RO/DI is really the way to go. You could use the money from
selling your LR to pay for an RO/DI unit... LOL =)

HTH

~Mort