Fermentation not starting

I have 12 gallons (2 buckets) of crushed Chancellor grape must. Saturday night I put a 1/4 teaspoon of sulfite in each bucket. Sunday night I pitched 71B Lavin yeast. I also added nutrient and energizer. 12 hours later nothing is happening. Do I need to wait longer? Brix was at 22, ph was about 3.6, and acid was right at 1%. Temp is 70. Just don't want it to go bad, I crushed it all by hand and have a lot of time into those 12 gallons.

ask me again tomorrow. it may take 48-72 hours to start some fermentation.

I agree. Give it some time, say around 36 hours....

Thanks for the replies, the yeast started up this afternoon so everything should be good now

stir twice a day to add oxygen to yeast. keep it covered with a towel or sheet.