Hi! I haven't had fish for awhile and just recently setup a 30 G freshwater tank with an AquaFin 30 pump (floss/carbon filter). I've done tons of reading and research to refresh my memory, but there's just so much out there and so many contradicting methods. I would love advice on how to really get off to the right start - especially from other Goldfish keepers! My profile contains all the current stats on my tank, as of noon today. Tank start up: March 29th - JUST started cycling. I added water conditioner (NutraFin Aqua +Plus) and waited 24hrs before adding NutraFin Cycle and 1 fantail Goldfish. Today I added more NutraFin Cycle as directed on the bottle for start up tanks. Marley (the Goldfish) is doing well, very active and seemingly happy. No puffing, discoloration, or sucking air from the surface - so ammonia seems to be held at bay for now. Water tests at: pH: 7 NH3/NH4: 0.25 ppm NO3: 0 ppm NO2: 0 ppm Question: Because ammonia is showing 0.25 ppm today, should I begin daily 10% (or 15%, 20%?) water changes and keep this up till levels go down? If ammonia levels go up (which I assume it likely will because the tank has just begun cycling) do I increase the w/c %? Up to how much before it seriously compromises the biological filter I'm trying to establish? I do know about Prime and Ammo-Lock, etc and intend on purchasing some to help protect my fish during the cycle. I am tempted to limit feedings because I don't want to add to the toxin load... Although to some extent I've also read that continued feeding can be beneficial as it helps with the cycling. Today is the first day I fed Marley since the tank start up, and only just a very little bit. Question: How often do you recommend I feed 1 goldfish during the start up cycle? (Current diet: Aqueon Color Enhancing Goldfish Pellets) Question: Knowing that Goldfish tend to produce a lot of waste, I want to be sure my tank's bacteria is capable of handling more before I add another goldfish. When is it recommended I add more fish? Once the tank has fully cycled? Once the initial NH3/NH4/NO3/NO2 spikes have dropped but have not completely gone down? Do I add just 1 and wait, or would an additional 2 be okay? Answers to these questions and ANY other Goldfish advice is appreciated!!!