I have a new 20 gallon long tank and I have 4 glowfish danios plus two mystery snails inside a separate one gallon container. My question is can I fill my new tank up with treated water for chlorine and chloramine add fritz zyme 7 and then add all fish and snails within the same day? I’ve read that danios are hardy so I should be okay right if I check the water daily? If I get a spike of ammonia or nitrite what should I do to treat it? Do a 25%- 50% water change?