IMO, you would be better off simply not using fish to cycle your tank at all. Use bio-spira, and/or some gravel or filter media from an established tank.
Your cycle will complete much more quickly, and without harming any fish.
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90g pltd: angelfish [black, leopard, platinum, silver zebra & gold vt] · glass catfish · harlequin rasbora · neon & rummy nosed tetra · sterpai & spotted cory · bristlenose pleco
28g pltd: scarlet badis · oto cats · bristlenose
16g pltd: flame & honey gourami · cherry barbs
8g (soon to be 18g): 15 lbs LR · 10 lbs LS · YSP · zoas · shrooms · flame & hammer corals · brittle star · scarlet & electric blue hermits · firefish
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