That would be a minimum, but too many variables to say how well it'll work for you, meaning no ammonia/nitrte spikes. 4-6 weeks is best, but a lot depends on fish load. There's been no mention of that here. Lightly stock, llightly feed, and test every 12 hours or so. Be prepared for spikes and be happy if they don't happen.Is there a concensus on a minimum of two weeks?