I have a 20 gallon tank with three very small goldfish, 2 java ferns, and 2 anubias. I've been trying to cycle for five weeks, have used TSS+ once, and I'm currently dosing with Prime and Stability. Usually, my ammonia has risen to 1ppm about every three days, at which time I do a 30% water change. This last 7 days, my ammonia has stayed level at .5ppm. Nitrites are 0ppm, and I haven't tested for Nitrates lately. Question 1, could this be a sign of cycling, or should I not get my hopes up? Question 2, should I do a water change, or leave it the heck alone? (I'm a fiddler, I feel like I need to mess with it.) Question 3, I saw these things called Bio Balls on Amazon, that supposedly give bacteria more surface area to grow on, has anyone heard of them? Does anyone use them and/or recommend them?