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  1. J

    High Nitrates in new aquarium

    Hi all, It's been over 2 weeks since i upgraded to a 330L from 250L aquarium and after several 50% water changes (3 a week) i cannot lower the Nitrate levels from 80ppm. I did lower it to 40ppm but it quickly rose back up again within 2-3 days. The Ammonia and Nitrite levels are 0. PH 7. I...