K.K.
I sweetened my sun tea by the glass...that way any company could have it as sweet or unseet as they liked ;-)
For peach sun tea I used 3 tea bags of the bigelow peach tea to 5 bags of the lipton tea an it came out nicley flavored. not overly peachy and not too bitter.
For Basic sun tea You buy one of those inexpensive glss jugs that have the bottom spout and fill with water, the you can either use regular tea bags (i usually use about 8) and adjust for strenght of tea you enjoy; or, you can purchase the sun tea bags that a couple of companies have put out...they are larger in size and i believe you only use one or two at a time...
I hope this helps...
Good luck!!!! ;-)