For anyone to say "Never Ever use Rockwool" is absolutely laughable.

Many of the biggest production growers out there use nothing but Rockwool in one form or another with astonishing results. I have used dirt, perlite, perlite/vermiculite mixes and Rockwool all with great success.

I am just a small grower but I have personally witnessed some very large poduction grows and it realy comes down to observation and learning regarding the use of any medium.

It is really too bad that many on these forums spout out mis-information based upon hearsay and not real growing experience. Even those with experience are really just giving their own personal preferences.

Rockwool is fine, Perlite is fine and even dirt is fine if you just spend a little time to learn how to use them.

regards,
Max Blast