This is my 30 gal., it's been up and running since mid Sept. since Hurricane Jeanne caused a long power failure (1 1/2 wks.) that wiped out the previous contents which had been set up for about 2 mos. and was the contents of my 2 8yrs. old 10 gals. nano. So far everything is doing great so feel free to ask ???'s or critique as you like.