Yes, there is a product called bio-spira. It is essentially refridgerated bacteria (to slow down their metabolism). This stuff can be added to a tank and have it cycled within 24 hours. The only issue is that you have to be ready to fully stock your tank, otherwise there won't be high enough levels of ammonia to keep that large a bacteria colony alive.
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46 Gallon Planted Tank: 6 harlequin rasboras, 3 platties, 2 colomesus asellus, 2 dwarf crayfish
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