i bought a 10lb tank filled for $80 up here in gainesville. im sure theres something local in orlando but i had a low tech set up back then so i didnt look much. if nothing works out i can always bring you back a cylinder from up here, i live in lake mary and im probably heading back there during spring break.
Fluval pimp #4 aka PIMP master!
I SAID ITS GREAT
A FLORIDA GATOR!!
I ordered mine from the BeverageFactory.com. They have 5 lb cylinders on sale now for $56.00 and with $8.00 shipping it was the cheapest I have found in Tampa. The cylinder arrived in excellent condition and very quickly. The other place is Airgas 2601 South Division Street (407) 849-0630. Their prices are much higher but they have both the CO2 gas and cyclinder. The Airgas here in Tampa was going to charge me for both....$113.00 or around that price.