ive never used deca but i have friends that have, and a few of them say them can tell that they are gettin the "healing" effects around 450mg weekly. But since your once testosterone replacement therapy (TRT) at 150mg weekly, you definately would wanna up the dose on the test if you are going to run deca. I wouldnt run 150mg of test, with 150 mg of deca. test should always be higher than deca.