Review of the MF-121 Warner Marine skimmer

How far would you say the gate is closed on yours? Mine is wide open in 9 inches of water.

 

You guys are making me itch to get mine set up, but am still getting the overflow built...hope to get the skimmer set up by the end of the week.

 

Good luck!Let us know how it works out for you.8)

 

Mine is in 7" of water and I plan on bumping it to 8" then 9 if need be by lowering the height of the platform I made for it. (My sump is deep)

After it settled down from break-in period, my 121 water-line has dropped all the way to the top of the base cylinder before the cone with the gate closed. So I am deducing it needs to be in deeper water. Correct?

 

Correct Matt. I will post my results of the depth test just to be sure though.

 

Vinny my gate is but a 1/4 open at 7", air valve 1/2 open, bubbles reach the bottom of the skimmer cup.

Matt my sump is 18 inches deep with an adjustable dam that can raise or lower the last 4-6" of the sump, so I had to build a pretty big stand.

 

Thanks for the update! Well I ran a water level test on my unit and here are the results.
6" water depth:Even with the gate fully closed I could not raise the water level enough to be comfortable recommending it.
7"water depth:One inch seems to make a huge difference and I achieved a desired water level at this depth.As Net2n stated gate was 1/4 open.
8-9"water depth:This seems ideal.At 8 inches the gate needs to be a little more then half open and at 9 inches the gate is almost fully open.(which is the level I have mine)
Anything deeper and you will probably have to build a stand but I could not test this depth.
I would also like to note that I did not change the air valve from its fully open position.

 

Thanks for this Vinny.
I have a couple questions -

What is 'fully-open' with the air-valve? Is the screw off completely?

Also, I find it interesting that I cannot get the desired water-level in the skimmer at 7" sump depth in my tank - perhaps this is bio-load related as I only have 3 fish (that I barely feed)?


matt

 

I have the air valve open meaning its not restricting the airflow.Not completely off. Also it took about three-four weeks for my skimmer to finally level off.In the first few weeks I was constantly adjusting it.This may be the reason you are having trouble Matt or your water is just too darn clean.;D Did you try to restrict the airflow a little?This may bring your water level up some.

 

Been reading this thread and it inspired me to get one. I am getting a 121 for my 75 today. I will post my results once I get it set up. Thank Vinny for all your input. It will make it easier to set up.