Tank is probably cycled...keep testing to be sure though. SG
is good. Temp is probably OK although it might be a little on the low side...new lights will probably raise it a few degrees though. pH is low...guess you know that though. I would try to slowly bring it up to at least 8.2-8.4. Have you checked your alkalinity and calcium? I wouldn't be surprised if they were both on the low side. My newest coral prop tanks were at 2.0 meq/l alk
and 320ppm calcium after they finished cycling...pH was about 7.9. If you have good LR
to start with, the cycle will be shorter. I started a 10g tank with LR
from the LFS
and it never showed any trace of ammonia or nitrite. Not even after I added a small ocellaris clown. Perhaps your LR
was far enough along that it experienced only minor die off and may have already had a good bacterial culture started.