anastrozole or adex, is an AI, great for controling estrogen while on cycle, but for PCT, you want to use a SERM, either nolvadex or clomid. i find that nolva has less side effects for me and thats what i use when i do PCT. a few days after your last shot, begin nolvadex for a total of 3 wks. wk 1, 40mg, wk 2 and 3, 20mg. sometimes i will continue on for an additional 10 days at 10mg, if i feel like i am having a hard time recovering. you can run a low dose of adex through PCT, to help keep estrogen levels from being too high, but i would reduce it to around .25mg EOD. tren can be harder to recover from than many AAS, and if you want to ensure better changes of a fast recovery, you can use 250iu HCG 2x per wk, through the cycle. discontinue the HCG a few days before you start PCT
also, while on cycle, be careful that you dont use too much adex. we want to control estrogen on cycle but not wipe it out completely. taking adex ED may be too much for most. everyone is unique but that dose is going to be on the high side. .5mg EOD should be plenty, and for some, that dose still may be too much. you'll have to play around with the dose to see what works for you. if you find you are getting too dry, getting dry and achey joints, or if you find that your sex drive is getting very low, reduce the dose of adex.