Dear Tara, the question is not very clear. What is your initial concentration of peroxide? You have to be careful. Sometimes they sell 30% and there are not problems, as noted by Kooti in this thread. However, sometimes they tell you the "volumes". When they say "10 volumes" it means that 1 liter of peroxide solution releases 10 liters of O2 (at normal conditions). 100 volumes tends to be ~9 M (you can use PV=RTn to make the numbers yourself). Hope this helps.