Well, I hope that this is a question I can help with!!
I love homemade iced tea but for years I tried to make it myself and it just never seemed quite right. For me the secret is lots of lemon juice, it really made it taste more like iced tea, rather than just cold tea, if you follow what I'm saying.
If you want an exact recipe, try this. It's a no fail recipe that calls for a fair bit of sugar. The first time i made it I tried half sugar and half splenda and then just kept moving down until it was all splenda. Here, sugar twin is much cheaper than splenda so I've tried lots of different combinations. You can start with this and adjust it any way you like. I hope you like it as much as I do!! I usually make a batch and a half because it goes so fast. Any more and my pitcher isn't big enough.
Lemon Iced Tea Recipe
8 cups water
3 tea bags (the recipe called for Lipton, I've always used Tetley)
3/4 cup sugar (or sweetener)
1/3 plus 2 tbsps lemon juice (bottled is fine)
Boil the water in a large pot. When the water comes to a rapid boil, turn off the heat and put the tea bags into the water and cover. Let the tea steep for approximately 1 hour. Pour into a pitcher and add the sugar/sweetener and the lemon juice and chill.