Hello.
Life 1 and 2 are provided by the CHAP facility and are not held in the Storage Tanks. You will have enough Life 1 and 2 as long as you have a functioning CHAP. You must have certain materials for the CHAP facility to run, which are stored in the Storage Tanks. The easiest way to have those materials are having functioning mines, Smelters, and enough Storage Tanks to hold those materials, or a functioning SPEW and Residental units. SPEW's can save your butt, as they can make anything you need, they never get filled up (like a Storage Tank can at 1000) and help with morale (so your people won't just up and leave).
It's all in the start. 20 for each Food and Life Support before you launch, and after touchdown, it's building a CHAP and Agridome first, along with a SPEW, Storage Tank, Robot Command and Warehouse, etc.
I love Outpost 1 and wished I could get it to work on another cpu other than WinXP.