Well, if you're going to run 300mg/wk of Tren then you would run 600mg/wk of Test to have a 1:2 ratio of Tren to Test. Or vise versa 600 of Test to 300 of Tren to have a 2 to 1 ratio (2:1). Bro, 900mg/wk of two strong compounds that are known for sides, just make sure you have your auxiliaries on-hand for any sides that may pop-up. I'm pretty lucky, I've run these two compounds at these doses and higher, plus other compounds in the mix and I don't really experience the physical sides like others do, but the one side I had to really prep for was the mental aspect of what these compounds can bring out of someone, ie: aggression, constant irritability, and a serious case of sleep deprivation.