I just received my comline 9012 DC skimmer and set it up to surface skim but I don’t see that it’s skimming much of anything. I have it in a 75 gallon Aqueon which has a rim. what I read Is I’m probably not having the proper water height so the skimmer is submerged too far but it would clear the rim of the tank. I can’t lower the water height because than my canister filter won’t function properly. I saw Tunze sells magnets, extender's and spacers but they’re in my opinion are ridiculously priced plus I’m not sure if they’re sold as a set 2 inner magnets and 2 outer magnets or just 1 set. If anyone knows the answer that would be fantastic or if anyone knows a workaround that’ll be even better because I can justify paying another $90 dollars for magnets when the skimmer was already expensive at $430 plus tax