How much Pukani/Fiji base rock?

I'm a little thrown off as to how much of either I should get given that they're both quite porous. I've got a few pounds of live rock and live sand already in the tank and I'd like to fill the remaining rock space with base rock. The tank is a 29 and, as mentioned, has maybe 3-5lbs. of live rock already in. How much volume does this stuff usually take up as compared to normal base? I was thinking 15-20lbs. of rock should do the trick but would like someone who has held this stuff to confirm. I know it's lightweight for the volume of rock you get and I'd prefer not to over-order.

 

A lot depends on your aquascape desires. Another 15 pounds could provide a nice reef look with some open space, 20 or more pounds with more reef and less water. You can always break the rock and use it for rubble.

Jeff


Text mangled by iPhone spell check...

 

I'm a believer in the "less is more" ideal so I'll probably go with the smaller amount and if I feel like it needs more, I'll buy it after the fact.

 

I have a full tank shot of my 75g at the top of my mantis tank build. It was 65lbs of BRS eco rocks & 35lbs of live rock and I was pretty comfortable. While I havent used any pukani it is said to be more pourous and with that takes up a little more space. I would consider around 1lbs a gallon for a pretty decent scape, so maybe 20-25lbs more.

 

Thank you for your suggestion!