chiller and ro/di system

ill leave the ro/di for someone else, with the only comment that i like the
kent RO/DI's.

I have a 37 gal fish, anemone, lots (45 lbs) of LR, DSB with 3 55W PC
lights. In my sump(5 gal) I have a mag drive to pump water up to my tank,
as well as a pump for my protein skimmer. I also have a UV sterilizer.
Throughput is about 400 g/hour.

Can anyone suggest a simple/inexpensive chiller that will bring my temp
from
about 85F to 78F ? I am fairly new to this hobby and am bewildered by all
the choices.
Any easy suggestions ?

your best choice is to yank that UV, thatll do some, the next is a fan over
the sump, . 3 55w PC's are not going to heat the water all that much, some
but not that much. the next thing to look at is your mag drive pump, see if
it needs cleaning, or is it significantly underpowered, you didnt state
which one it is, nor how high the head from the sump to tank is, but it
sounded like its driving a venturi skimmer a UV and the return. so if its
underpowered itll add to the heat.

--
richard reynolds