First SW Tank

[makana]

Does anyone have firsthand experiance with tuffa rock, negative or positive?

I have read lots of articles and posts claiming that tuffa is bad but they are never by someone who has actually used it. All the posts I am finding from people who have used it are positive.

I read a post from a woman who claims to have nothing but tuffa in her tank with no problems for years. I also read a post from someone who claimed to have 350lbs of concrete with only 40lbs of live rock and no problems.

I would be interested to hear from people here what your experiances are with it.