If you are holding water while in primo only, I suspect your primo may not actually be primo. If the luidex helps the situation, that is a good indicator that you are not dealing with primobolan. Since primo is not a substrait for the aromatase enzyme, you should not be holding water due to an elevated estragen level. Arimidex SHOULD be worthless to you. If it causes you to lose water weight, you have been sold another steroid, and were told it was primo. You could also be gaining body fat, not water. What does your diet look like?