I know I should not be concerned with nitrate levels between 5-20ppm , I freak a lil bit and test like 3 times a day and its getting expensive. \n \nI have my lil 12 gallon, till i get the 125, and it doesnt really have much filtration, cept the bunch of filterfloss I have jammed in the back compartments..I rinse the filterfloss about once a week or so, when I remember\n \nAll my parameters check decent\n \nNitrite 0\nNitrate 5-20ppm\nAlk 300ppm\npH- 8.2-8.4\nDont know ammonia or my salinity yet, gotta get a test for ammoni9 and get a refractometer for salinity. \n \nMy question is:\n \nWithout a skimmer or some type of mechanical filtration will my nitrate levels always be there?\n \nI would like to mod the back chamber area of the tank, where all the filterfloss is located. In a perfect world there would be a skimmer that I could just drop in there and be done, but this most likely will not be the case. \n \nHere is a basic diagram\n[IMG]http://i12.photobucket.com/albums/a223/huladance/Fish%20Tank%20Photos/tanktop.jpg[/IMG]\n \nIf I removed wall 2 in the diagram joining chamber 2 & 3 together Is there a skimmer out there that would fit in there, be able to be submersed fully in water, and still get the job done? the chamber is approx 7 3/4" wide, 2 3/4" front to back, and 9" deep.Possibly the sapphire nanoskimmer? ne1 have any luck or experience with one of those?\n \nHelp and opinions, as always, are appreciated..