I have a Multistack Micro Chiller that I just took over. I pulled the strainers today and found about 2 inches of sludge in the screens. From seeing this I am thinking its not to bad of an idea to clean the HX before cooling season. The information I have gotten from Multistack is to by their $500 HX cleaning set up. I am curious if anyone has done alternative methods to clean these HX's? I would like to avoid buying this setup if possible.