now, don't take this wrong but its horrible to cycle a tank with a living creature, please do not do this its extremely painfull for a fish to have to live in an ammonia atmosphere. just toss in a small piece of [dead] shrimp and there ya go. what amount of liverock is he using? what type of water? [tap,conditioned tap.ro/do].
as mentioned CHROMIS on there own are tricky to get to survive sometimes let alone cycle a tank. I never add fish to a new system ubtil at least the 3 month mark and then the hardiest first and 1 at a time.
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