Large SPS tanks w/base rock?

[attaboy]

I've read many postings about one of two things happening in tanks using base rock vs. live rock:

1) The rock leaches phosphates for an extended period of time (4-6 months).
2) The sps eventually close up polyps and die off.

The first seems controllable with a bit of patience, but the second is a bit of a mystery to me. I'm looking to see if anyone out there has a successful large SPS dominated system using base rock (e.g. BRS Pukani).

Please post if you have direct experience.

 

[swanny]

There are many large sps tanks that start with dry rock and have no issues keeping sps. I started my 120g with MarcoRock and just threw it in my tank and started the normal cycle. Three months later I have many thriving sps and no phosphate issues. Sps will struggle with high phosphates but you have to have a way to combat it such as gfo, water changes etc..