The natural method I use is more about the system itself.....I use 5-10gal soil based heavy planted full to the top with water tanks. They are mature systems, no filtration other than what the plants provide. I keep them on a 12h/day photoperiod-before, during and after spawning and I feed both male and female before, during and after...I kinda do everything opposite of everything you read about spawning this species.
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