Whats Wrong With My Puffer fish

[tonynader]

I purchased a small porcupine puffer yesterday...it ate when i fed my tank. Today it was acting all funny in a corner with its back arched up and tail curled....but when i came to feeding, it came out and started eating still. (blood worms and brine shrimp) but then goes back and does the same thing....now it is laying on the sand bed with tail curled
should i be worried?
all parmimeters are good

 

[sepulatian]

Puffers can act very odd when newly introduced. The fact that he came out to eat is a good sign. Just so we know, can you please post the exact readings for ammonia, nitrite, nitrate, SG, PH, and temp? How long did you acclimate him? What equipment is in the tank? These will all help diagnose what may be going on.

 

[tonynader]

Ammonia 0
nitrate 5.0
Phosphate 1
PH 8.4
temp 78
acclimated for an hour with drip system
30 gal to 15 gal sump with protein skimmer and filter sock