I got a arctica 1/4 hp chiller with a titanium heat exchanger. I want to run my nutrient straight thru the chiller since the only reason i got it is for my res. Is that safe to do? Next question, its rated like 490-1920 gph. For cooling res only shall i go with a lower gph pump or higher gph. What is going to be more efficient? Im running aeroflo 36 in a closet sealed,the best i can, portable ac 8000btu 1000watt hps. Just looking for opinions on this from people who have exp using chillers. Thx in advance guys.