What bass pedal should I get... Is there any out there that can give me an even lower sound?
Octave pedal perhaps? Or do you mean like a real low end bassy sound?
Quote by TiMaRmStRoNg101
there was once this girl
in my school
and she was like
'greenday is so punk'

and i was all
and punched her in the face.
cause i can do that
cause I know more about punk rock and stuff
Octaver, or, my personal favorite, a tube emulator.

The Sans Amp Bass Driver, the Hartke Attack, and to a lesser exten, the Behringer Tube Emulator are all great at giving you that tube depth and punch and warmth at a fraction of the price.

However, my Behringer just died for no reason after about a year of owning it, luckily I got the Hartke about 2 days later, and that thing is amazing.
-Fender Deluxe Active P-bass (60th anniversary)
-Peavey T-40 (1982)
-Hartke HA-3500
-Aguilar GS 2x12
-GK Backline 2x10