Changing gravel to a soil and sand in an established tank

[philly27]

not an emergency and will perform when i know everything will survive. i have a 4 year old 30-gallon tank with giant danios and an angel. i would like to change the substrate from gravel to dirt with a sand cap like my other tanks. im worried about the fish and snails.. any tips? can i soak the dirt for a bit? rehoming in different tanks wont work besides the angel and snails. i know the ammonia leaks for about a week until the cycle re-establishes (atleast with smaller tanks). any tips?

 

[philly27]

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