Here's the best info so far in this thread..IIRC, the NEC limits you to 20 amps for a standard outlet/circuit.
Next, if you're just going to install a different breaker on an existing line, BE CAREFUL you don't just install a larger breaker because the sparky's (electricians) install the smallest wire the circuit is rated for, (cost control) and overloading the wire can (and often does) cause house fires.
most devices will say in there manuals that it should be installed on a 15 or 20 amp breaker.
if you want more power you need another line.mostly for you ownsafty.liets just say therer was a problem in your tank one day.maybe a light falls in when your arm is in the tank. do you want a 30 amps of power going through you or 20 before the breaker pops. also it should be on a gfi curcit and wouldnt know where to get a 30 amp gfi outlet.
and last if you do run another line try to make sure it is on the same 110 line comeing in to your house.there are 2 110v lines going to your house plus one ground wire witch is also the support wire sometimes. this is how you get a 220v outlet. it is both 110v wires in a single outlet. so for the sake that safety is allways nice. if you do run another line try to get the power from the same 110v line. this way there is no way of getting a 220v shock witch is much more dangerous.
one way you get 2 110v 20amp shock (bad)
and the other way you 1 220v 20amp shock (worse)
just talking
thanks