additives to dishwashing detergent
Just got my new Bosch d/w installed yesterday, love it so far! I have been researching some additives people sometimes use to help get the best results. One thing I came across was the addition of 1-2 drops of Dawn to the detergent, and I know that some of the prepackaged tablets say they have Dawn in them. Is there any reason I shouldn't add a drop of Dawn in with my regular detergent? Can it do any damage?
Next, the tsp vs STPP confusion. I have and use STPP in my washing machine, but I also have TSP (the real stuff) and have found that some people add that to their dishwasher detergent. Now I did read on a thread here that tsp forms a precipitate in water and I don't understand that because I find tsp to be very soluble in water...I make a solution to clean walls, etc in our house. So can someone give me the reasoning behind the precipitate? Anyone adding either TSP or STPP in their dishwasher can you tell me about how much you are adding, or if their is any possibility of damage to the stainless tub?
Next, bleach- I find some people are adding a little (couple Tablespoons I guess) to their dishwasher detergent. Can that damage the stainless steel interior?
Lastly, what rinse agent should I use? I quit using rinse agent in my old dishwasher because I found it was leaving quite a residue...enough that when I filled a glass with water I would get soapy bubbles that did not dissipate, and I didn't want to be drinking that! I did add the sample of jet dry to my Bosch and set it to the lowest setting (1) because I understand it helps with the drying. So far my glasses don't seem to have excess rinse agent in them so when I fill them with drinking water it is not making soapy bubbles like with my old dishwasher.
My water is hard water, around 10 grains...comes from Lake Michigan. However, I have never seen any kind of cloudy mineral buildup on my glasses even without any special treatments added to detergent.