Tifftastic
"With your powers combined . . ."
You'll need to be adding something to remove chlorine and condition the water each time you change it. Add enough for the amount of water you take out, if you remove 2 gallons add in enough for 2 gallons. Prime is a great conditioner as it detoxifies ammonia while it removes chlorine.
Second, you need a good liquid test kit. You'll need to test your water for ammonia, nitrite and nitrate. You'll know the tank is cycled when you have zero ammonia, zero nitrite and at least 5 ppm nitrate. First the ammonia will get high and then drop and when it starts consistently reading low numbers your nitrite will spike, then it will drop and nitrate will spike. Eventually the first two will start to disappear and you'll only read the final on the test kit. This is when you know you are cycled.
Third, stop adding fish until the cycle is finished. If you keep adding you'll likely end up losing them all and causing more heart ache than waiting will cause.
Finally, I'm assuming the first two "neon" fish you added were GloFish, which are danios. They are active fish that require a school, you'll need to end up with six of them total. The next two fish you added, guppies, will need to have females that will out number the males and you'll have non-stop babies. Seriously, they breed like rabbits. I'm not sure what the other fish you added are, but in a small tank such as this, the mix of danios and mixed sex guppies is likely not a good combination. It will become over stocked quickly and the danios will likely nip the long flowing fins of the guppies. I would suggest asking the store if you can return the guppies, or the danios and stick with one species or the other.
As far as which other fish you can add, I would suggest picking what you want to start with. Also, what temperature is the tank?
Second, you need a good liquid test kit. You'll need to test your water for ammonia, nitrite and nitrate. You'll know the tank is cycled when you have zero ammonia, zero nitrite and at least 5 ppm nitrate. First the ammonia will get high and then drop and when it starts consistently reading low numbers your nitrite will spike, then it will drop and nitrate will spike. Eventually the first two will start to disappear and you'll only read the final on the test kit. This is when you know you are cycled.
Third, stop adding fish until the cycle is finished. If you keep adding you'll likely end up losing them all and causing more heart ache than waiting will cause.
Finally, I'm assuming the first two "neon" fish you added were GloFish, which are danios. They are active fish that require a school, you'll need to end up with six of them total. The next two fish you added, guppies, will need to have females that will out number the males and you'll have non-stop babies. Seriously, they breed like rabbits. I'm not sure what the other fish you added are, but in a small tank such as this, the mix of danios and mixed sex guppies is likely not a good combination. It will become over stocked quickly and the danios will likely nip the long flowing fins of the guppies. I would suggest asking the store if you can return the guppies, or the danios and stick with one species or the other.
As far as which other fish you can add, I would suggest picking what you want to start with. Also, what temperature is the tank?
