The way that I've taken LL Magnetic clay baths is to fill up the bathwater to a normal amount, then dump the clay mixture in, and then get in the tub. The clay mixture is just the clay, mixed with water - makes it smoother (and yuck, slimier) but helps it melt into the bathwater. LL Magnetic Baths recommends getting a drill with a paint stirrer attachment to mix the clay prior to putting it in the bathwater.
I dont know how doing it this way would have altered it, i've had fairly severe physical and emotional detox symptoms for about a week after each clay bath.