How long typically until acro polyps come out?

[kenny b]

I was wondering how long does it typically takes for a newly added acro to extend its polyps? I just added my first SPS frag-an unknown light blueish acro this evening and its polyps came out tonight after the lights turned off-about 5 hours later. All my parameters look decent to me but I do have quite a layer of diatoms around from what I suspect is from an iron supplement I was dosing last week for a flowerpot that also had silica in it. The tank is about 6 to 7 weeks old and the variety of LPS frags in the tank are looking incredible.

temp: 77F
SG: 1.0252
alk: 8-9 dkh
Ca: 450ish
Phosphate: 0.03 ppm
Nitrate: 1.3 ppm
Turnover: about 28 times per hour

 

[Chronicj7]

6-7 weeks old is still pretty young. I have acro's extend their polyps almost immediately after introducing them to my system but its very established.

I'd say you're in the clear if he seems happy atm!

 

[gmate]

My Acro colonies tend to show polyp extension within minutes of hitting the water.

 

[Bpb]

My largest colony has such great polyp extension you can barely see its skeleton, and they're out 100% of the time day and night. That being said, it took at least two months after I acquired it before I saw a single polyp. My Oregon tort only has polyp extension at night. When the lights are on, no polyps ever