New tank, 20 Gallon High with 10 Tetras and 2 Apple Snails

[Tsunami:3]

I have a 20 Gallon tank been there for about 10 days. Used Betta tank water for cycling, now my Ammonia went up to 0.05ppm is this just New Tank syndrome or?
My snails are also breeding any tips on that?
I also would like to add a betta to the tetra tank is that a good idea?

 

[Aiken Drum]

How are you getting an ammonia test result of 0.05ppm? The lowest ive seen an ammonia test to be able to read is 0.1ppm. Most test kits only test as low as 0.25ppm.

Is this an ammonia test or a free ammonia test? What test kit are you using?

Apart from the snails is there anything alive in the aquarium?

Moving water from one aquarium to another will do nothing to help you cycle an aquarium. That's not how it works. All you might have done is transfer harmful pathogens that may have been present in one tank to another. Never move water between aquariums, you gain nothing and risk a lot.

If your aquarium is 10 days old and all you did was move water from one aquarium to another, your tank wasn't cycled. An uncycled tanks is sometimes said to be suffering new tank syndrome.

Do you know how to cycle an aquarium?

Are you wanting to breed snails or stop them breeding?

What type of tetras are you planning on keeping with the betta?

 

[Tsunami:3]

I don't have a betta yet, neon tetras
The snails are kinda just breeding but my tank can't fit that many snails.
I have cycled aquariums and know how to cycle it
I am using an AmmoniaAlert and a PHAlert
We also put some Bacteria from a bottle in
I have 10 Neon Tetras

 

[Aiken Drum]

So the ammonia alert is measuring free ammonia, which is different to most ammonia tests which measure total ammonia nitrogen (TAN). Its important to know the difference between free ammonia and TAN.

While 0.05ppm might not sound a lot when compared to tests for TAN, it's actually a huge amount for free ammonia. 0.025ppm is the toxic level for free ammonia and you are double that. Your alert patch should be giving you a warning for that level of free ammonia.

You need to urgently do water changes to bring that free ammonia down to the safe level. That amount of free ammonia is killing your fish.

Do not add any more fish.

Get a traditional test kit that tests for pH, ammonia, nitrite and nitrate. Do not add any more fish until your testing with your test kit consistently shows zero ammonia and nitrite.

Given you don't have a test kit, you have let water quality get to such a highly toxic state, and are significantly overstocked for an uncycled aquarium, I have to question if you know how to cycle an aquarium.

What precisely are you doing to cycle the aquarium? Tell me your process.