I made a short crappy video with my phone in the hopes that someone can help me out. I've tried my swc extreme 200 in 10" of water, and now in about 7.75 - 8" as you can see by the page of paper on its side for reference.
Take a look at how few bubbles are coming through the bubble plate. It seems one side very little, the opposite side many more, but still I have seen these skimmers absolutely pouring bubbles from the holes in the plate. I still have to close the wedge pipe nearly all the way ( can be seen in the video).
I just cleaned the pipe, and set the level very high ( had it set lower but mainly just gunked up the neck a bit and don't end up with much in the cup after a day or so). This is on a 90g w/ 30g sump.
Pretty decent bioload, feed 2 cubes of frozen mysis, bunch of pellets, cyclopeeze.. almost daily. I've taken the skimmer offline for a couple days, and when back on.. not really much increase in production so I don't think it's the bioload.
I don't want to get an air meter just yet but I am almost certain this is the problem. It feels like I am getting a bit more since shortening the air tube (notice how it's hanging over the back of the sump.
I have read through pretty much the entire thread so don't jump on me too hard if it's something obvious... really trying to get this thing working the way it should be.
The pump is horizontal, stock swc pinwheel. I do notice that the orange nub on the end of the shaft is stuck inside the pump, but in its proper location so I think this is ok? No idea what is wrong here!
I may end up going with the red demon pinwheel but if there is a larger problem that can be easily fixed I'd like to do that first.
Please have a look:
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