What you did was you wound up absorbing most if not all the salt . The way the SWF works is not by amounts of salt. It works by the very specific ratio that is mixed at 2 teaspoons per qt . This ratio is the same specific gravity as blood and bodily fluids thus it doesn't get absorbed by the system.
The main reason for the SWF not to work is dehydration and certainly mixing it wrong like you did. What I found works best for me and this goes for most experienced MCers is that you need to drink water in addition to the lemonade. Many swear by 1/2 your body weight in onces. For me I would hafta live next to the bathroom if I drank that much so for me it's equal amount of water as lemonades. Then a routine that I started doing and that many have found very helpfull is that upon arising you drink 16oz of plain water to make sure you're well hydrated then 1/2 hr later do the SWF MIXED AT THE PROPER RATIO(2tsp:1qt H2O). 1 hr after doing the SWF drink another qt of plain water.
You are NOT going to have solid BMs after the 3 or 4th day. Sometimes just after day 2 all you'll have is what has been come to be called round here as "butt pee". This is perfectly normal for the duration of the MC no matter how long you go for. Passing solids after the 3rd or 4th day is a good indication that you need to do some dedicated colon cleansing after the MC.