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Following! I just started setting up an IM 20 and I’m be dating on whether or not I should add a skimmer.
ok. If I am understanding the issue correctly, I might try adding more water volume in the tank itself to see if that helps. it will shorten the distance between water level in "C" and the pump chamber.My noise is coming from the water leaving the skimmer chamber and going into return pump area. Crazy, with this second (skimmer) chamber empty it is completely quiet. Adding the skimmer makes the noise. I assume it makes the water flow faster around the skimmer corners causing turbulence.
Water leaving "C" chamber into pump area.
Gotcha. It seems like it might be good for bioballs or something but cleaning back there looks like it’d be a pain. Sounds like the weir fish guards is a good investment so I’ll definitely be getting some of those tooThanks. Appreciate it.
to answer your questions...
1) the black "acrylic" on the back is simply a black adhesive tape/film on the tank's back panel glass. Not acrylic, per se. I just used a razor blade (exacto knife) to cut the film and then peeled it off.
2) I agree that those sections are largely dead space. I would have used a smaller/shorter heater if I could have found one I liked. but so far, it has worked fine with no issues.
The only other thing those areas seem to be really good for are hiding small fish that have gone through the wier and made their way back there. I found a lost Yasha shrimp Goby in there after being AWOL for 3 months. It was a real pain to get him out. Had to drain that entire back section to just 1/2 inch of water and then coax him into a glass jar. As an aside, my fish guard screens should be arriving today because I just found another fish that had.....dont get me started.