I'm new to home brewing so I still have a lot to learn. Yesterday I brewed my first all grain beer, a Belgian Tripel. I have brewed a couple of other beers, using ingredient kits I purchased from my LHBS, so this was my first crack at buying everything individually and crafting a brew. Today I was doing some reading of the forums and looking into pitch rates and their calculators when I came across Mr. Malty. According to the pitch rate calculators I have substantially under pitched my yeast. I used a tube of Abbey Ale WLP530 from White Labs for my yeast, and did not use a yeast starter or energizer. The calculations say I should have pitched 335 billion yeast cells, and I have read that the average White Labs tube and Wyeast smack packs have only 100 billion cells. So am I screwed, or can I add an energizer or simply pitch another tube or 2?