is it set at mim. or max.?
i had the same prob. with mine. kept it on the min for one day until it settled and then was able to increase a day latter once it broke in.

Yep this is correct as said above it needs to break in, if you have a look at the instructions it talks about this, pretty much the same you get with all new skimmers they need to break in.

If after a few days it still does it, have look at the water level you have it in, should not be less than 9" and no more than 12" optimum is around 10-11"

thanks for the reply my tank is a 155 gal and sump is 30 gal the skimmer sits in 9" of water and when i first hooked it up i had it set on 3 and it started to produce skimate fast. so i left the house for about 4 hrs and when i came home it was overflowing water so i set it back to off and same thing still over flowing

will prob have to raise it out of the water, less than 9" as recommended until it breaks in?

just wondering how long is the brake in peorid. i moved the skimmer to about 6" of water and one minute it is working fine and the next its like the water/bubbles wont even reach the top. so then i move the dile up and it starts to work again so i walk away an come back in 5 min and its overflowing .sorry for the dumb questions but am i doing somithing wrong. my directions suck

where can I order from? I would like to get the BM-NAC5E

Red Coral.

;) spot on :)

The NAC5E is not imported, there was just no call for it, in fact I think BM stopped making it although its on their web site.

Do you need only a hang on back? If so how big is your tank?

54 gallon corner tank and no sump... I'm restricted to hob skimmers

got the perfect BM for you will send details tomorrow