So this is my first time cycling a tank and I've tried really hard to read up on how to cycle a tank but there's such conflicting information on how to do it. So I have a 5 gallon tank with a sponge filter and for the last week I have started a fishless cycle using Dr. Tim's ammonia. Every day I check the ammonia levels and try to keep the level at about 2 ppm. Some days this level will go down and then I will put a couple drops of ammonia in the tank to bring it back up to 2 ppm, and some days it stays at 2 ppm so I don't put in any ammonia. Today I tested for nitrites and there's none. I know that not every cycle takes the same amount of time, but I feel like I must be doing something wrong. I thought there should be nitrites by now. Am I doing something wrong? I'm worried I've bought all of this stuff for my tank just to unsuccessfully cycle and not be able to buy a fish...feels like I'm wasting money on a hobby that might never even work. Please help.