phosphate and adding dry rock

[eli@fijireefrock.com]

yes new dry rock will raise your phosphates.
If your system is loaded with life and plenty of live rock with crazy pod population I would add 1 lb of dry to every 4 lbs of live rock in your system.
Or the safest way is curing the dry rock separately in a dark heated (82 degree) and power-head bin for 3 weeks then test and you should be fine for adding it to your system.