clen or effs??

hey guys i have been told that taking clens with hgh is a really good way of keeping lean and even dropping bf, i am due to run my first growth cycle in a week or so, i plan to run 4iu eod for 3-4 months with 250ml of test 500ml of decca e/w and 40-50mg of d'bol ed for 6 weeks. i have been told to throw some clen in for the duration, 2 days on 2 off, not totally sure bout that so thats why im asking you guys, my other question is would effs have the same affect as the clen if i ran effs instead?? or do you think its best to wait till im due to come off the gear?

any suggestions??