How long for live rock to seed dry

[Myka]

Originally Posted by vanreefer

Any thoughts or opinions on how long I would need to leave live rock in an aquarium to seed dry rock? using a few pieces from another tank to seed this new one but want to ultimately remove them
Thanks
VR

For what purpose? To seed aerobic bacteria to convert ammonia to nitrate? To seed anaerobic bacteria to convert nitrate to nitrogen gas (completing the cycle)? To seed the dry rock with pods and other critters? For aerobic bacteria, a few weeks is enough, and you'll get plenty of pods and critters in that time too. For anaerobic bacteria you're looking at months.