what can i do to bring down my humidity without buy a 200 dollar dehumidifier

my room is 8 x 8
6 plants
400w MH with super sun hood
one fan
one small heat fan for night to keep my temp above 65 during the day it stay constant at about 78 with about 65-70 % humidity

if i keep the heat fan on it the humidity drops to about 42 but heat rises to about 85+

tried everything i can think of im stumped
HiInOC Reviewed by HiInOC on . humidity to high what can i do to bring down my humidity without buy a 200 dollar dehumidifier my room is 8 x 8 6 plants 400w MH with super sun hood one fan one small heat fan for night to keep my temp above 65 during the day it stay constant at about 78 with about 65-70 % humidity if i keep the heat fan on it the humidity drops to about 42 but heat rises to about 85+ Rating: 5