Q: When it says 1 tab per 5 gallons added to the boil, is that for the 5 gallon batch? If I'm only boiling 2.5-3 gallons, do I need to half the tab? Thanks.
A: Yes, you can use a 1/2 tab for a 2-2.5 gallon batch. Using more wont hurt but is not needed
Q: Most recipes I've seen call for about a teaspoon of irish moss. Does a whirlfloc tablet give better results or is it a convenience thing?
A: Whirlfloc will function the same as the Irish moss, but will just have the convenience or beign able to add 1 tab per 5 gallons as opposed to measuring the Irish moss.