How much rock do you use?

[daniella3d]

I use about 40 lbs or so in a 75 gallons but it work great because it's the totoka liverock and it is extremely porous. Not only that but the total amout of surface a small piece of Totoka give is equivalent to a much heavier and larger piece of regular liverock. Because Totoka liverock has a lot of branching, it has a lot more amount of useful surface area.

So I guessed the 40 lbs of Totoka was probably equivalent to 80 lbs of heavy rock shaped liverock with very little surface. Worked great for me as my nitrates are undetectible and the rock seem to be doing a good job at filtration and denitrification.

It's not the quantity that really matter but the quality of the rock you put in there I think.