I hate to bust you'r balls but I'm sorry. Thats not good advise for a newbie.
Tren isnt for a first time user#1
#2 .5adex every day is crazy. Thats 3.5mgs per week.

I use .5mgs mon, wed & fri and do very well and so do most guys. Thats 1.5 mgs vs you'r 3.5.
But thats what this site is all about is for all of us to learn.
You need a certain amount of estrogen to grow period. The idea is to use just enough arimadex to stop side effects from happening and thats it. Unless as you stated you are holding to much water then maybe a person could ramp it up just a tad.
OR there are other things that can help keep water down also.