original-reefland
Reefer
<a href=showthread.php?s=&postid=8461218#post8461218 target=_blank>Originally posted</a> by jimdogg187
I have heard a local reefer's RS180. It was pretty quiet. Actually, I couldn't hear it all.
I think running them in sump makes a big difference sound wise.
I think your right. My dual external (RC) SP4 pumps sound like they are making pop-corn with the air being chopped up in them. Very annoying. Is this typical? If not solutions I should look at?