I have been cylcing my 20 gallon for over 2 months. Everything has been good. ammonia cylcing out in a lil over 24hrs. no nitrite.. and usually nitrate is between 5ppm and 10ppm. Tested water this morning as I planned on getting some fish today. Nitrate test tube bright red. Cant tell if its at 40ppm or 80ppm but either way.. what does that mean? and should i hold off on getting fish or will a big water change be sufficiant?