hey all, hope it's ok i post this here, figured it was right. my LP gas company is now charging me MORE for 'tank rental and account fees" $80+ (mind you i bought the tanks from the company prior to take over years ago, just dont have the receipt) We only use 1 of those tall ~4-5 foot tanks a year, which is about the same amount of $... so its really bothering me. I want to go tell them to shove.... and they say $175. account termination fee....! so sue me. questions, can i use my little BBQ tank to hook up? ....it seems they are both LP gas, and the fittings look exact. I think they are taking the "regulator" (disc shape thing the lines run into between the tanks)with them, where and how do i know i buy the right one? Are the big tanks that i have now 100 lb tanks, and my bbq 20 lb ? i would rather go get my little bbq tank filled a few tims a year myself then pay 160.00 for 1 $80 tank..... and more then anything i want to tell them to go screw themselves. thanks in advance.