dry rock or live rock

[chrispmcgill]

I have kinda a newbie question. I tore down a 90G cube with 100lbs of Live rock with a TON of hair algae. I also have 65lbs of dry rock that has been sitting in my garage for about a year. I will be setting up a 65 rimless and have a question on what rock to use.

What would be the better path to take? Cure the algae filled rock or start over and cure the dry rock. Or I guess the real question is...do i fight the GHA on the live rock or fight the PO4 seeping from the dry rock?

[BBQHILLBILLY]

Cure the algae filled rock with all the life in it.

[rrasco]

You can treat the dry rock with LC to prevent PO4 issues down the line. I did with mine, although I don't have a PO4 meter so I have no idea what the levels are/were. If you use all the dry rock and seed it with the LR from your 90, it will take awhile longer to seed. I was just starting to go through the diatom stages of the cycle after 4 weeks in my 210.

[Bill S]

Dry rock, and only dry rock. I'll never, ever, never put live rock into a tank. JMHO