Bro,
no special requirements for this one lah...if you have sps in your tank already... I would rate the birdnest as easy...does not require intense lighting i.e. put ontop of the roof type of sps...
As for the 2nd one... this is an extra piece...I have a similar smaller one already and have been on the sandbed for 2 months already...so the photos that you see have just been taken yesterday....
Rgds.