I have i have, did not want to risk it myself personally without your advices, also very kind of you to offer a tank, however i do have a 10 gal and acrylic sheets to cut, have not done so yet since im trying to develop a sump set up to go with my 55 gal planted freshwater, im currently running 2 cascade 500, both only have 2 levels (HATE THAT).... figured a sump would be more effective $$$ wise in the long run and provide a bit more stability for the water parameters... eh?