I am on day eleven also in my 5FT 55 gallon tank, my nitrites spiked a bit on day 9, to 0.3mg/l I am now adding half the AM and hopefully it should settle back down.
cant wait to move my 4 silver dollars, parot fish,plec and pictus in too the new tank, They outgrew my 20 gallon in about 7 months.