Hello every one, first of all i would like to say thank you to all for your daily input on subs. I was wondering if i could get your thoughts and ideas on using a propane tank if properly reinforced with 1/2 ribbing. The dive depth i am looking for would be no more then 300 feet. Could all of you share your thoughts on using a 1000 gallon tank. 
                                                                Kurt Hedlund
Kurt Hedlund E:Mail-khedlundconst@msn.com    Frederic, Wisconsin   
khedlundconst@msn.com