Hello everyone, I'm new to this whole hobby and I have a few questions. I've done extensive research but I really need specific answers. Firstly, i purchased a new 20 gallon tank with two filters, a heater, ect... And I am attempting a fishless cycle. I have added fish food, and it is definitely decaying. There are little clear white-ish strands of slimy stuff on the food that has been rotting. The tank smells absolutely awful. The person at the store I went to told me to get nutrafin cycle, use it and feed my tank as if there were fish in it. I am setting up a brackish tank for a green spotted puffer, or possibly something else (because If I get a gsp, I will have to upgrade to a 30 gal before it is fully grown.) anyways, I am getting a test kit tomorrow for ammonia and such, and I was wondering if I am on the right track, or am I not doing something right. Also, I need to know when to add the salt to my tank to make it brackish.do I add it after the tank has cycled? During? Do I slowly increase the salinity for the fish in the tank once they're in there? I'm very new to this and I'd love some answers or confirmation that I am on the right track. Thanks!