Also...are those airsoft or real in the background...if real, keep them away from the tank! I know the hard phosphorous coating on the AR's is tough, and are usually used in rough conditions...but
SW is really hard on guns! Especially if the barrel is hard chrome lined! Just thinking...you don't realize how much splashing your reef makes until you check the wall behind your tank or your hood! (it's kind of amazing...you can even never spill and you'll get some salt on the stuff around your tank!)
-Jon