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KarstShrimp wrote:I used bio-starters when setting up my 12G tank and none for my 6G. The 12G was cycled after 6 weeks, and the 6G in a week. Other factors could be in play, like I had filter and live plants in the 12G but only rock in the 6G. But I do believe you don’t need the bio-starters.

You do if you have introduced shrimp before your tank cycle has finished