Hi every body..can i have some advice on how.long did everyones reef tank take.to get from 10ppm to 0 ...and.this is for.your start up cycle. I started cycling my 150gallon tank on the 24th november
By about 30-35 days or so the nitrites have dropped to zero. Then it's a matter of water changes, which will bring down the nitrates to a manageable levels (<20), and other reduction of nitrates methods: Chaeto, Marinepure, etc. So about 2-3 months or so. Of course your mileage may vary.