With a 2 quart enema the liquid should go into the ascending column. However many people feel that the liquid does not travel that far.
Many factors enter into this situation. Lets me start by saying that being relaxed, calm and patient is essential to get a complete fill. I can tell by the distention of my caecum. This part of the colon will stretch to over twice its normal size and when I am full I can feel with my fingers pressing on the correct place that the caecum is greatly stretched. I then know that I am completely filled.
Some other pointers:
Take a least one cleansing soapsuds enema before starting your complete fill enema. I personally take two soapsuds enemas, the first being nearly 2 quarts and the second being usually 2 ½ quarts.
Start with the Sim position (left side with right knee drawn to your chest). When half way done turn over to your back with knee raised and a small cushion under your buttocks. When you feel you are getting full then turn on to you right side and complete the fill. At this point you should be able to feel your caecum being filled. Do not roll over to your left side. Just retain it as long as possible and then get up and use the toilet. Practice helps.
Also I find that 2 quarts may not be sufficient for this deep enema. Many people take a 3 or more quarts enemas for a complete cleanse.
I have found, personally, that if I do this for 3 to 5 consecutive days I do get a more complete cleanse. I am usually doing this in conjunction with a juice fast.
I believe that deep enemas, if done correctly, get as high as any colema or colonic.
I hope this helps you. If you need more info just write I will try to oblige.