I've always used bags of Pelletized lime because it is easier to spread on my small quarter to half acre plots. Either way it takes 6 months to work. Don't use liquid lime. Check the CCE number on bagged Pelletized lime or lawn lime to know how much to use. The standard one I've bought at AL coops is 90 or 95% CCE which is good. Some are 70 CCE which means it has less effective Calcium carbonate amount so you have to use more. Bulk lime is usually cheaper if you have to spread a lot. One place near me was charging $27 a ton a $7 a ton spreader buggy rental fee. Just remember you need something big to move that buggy in your plot. That's the main reason I just use bagged.