I've had a 20 gallon tank for about 2 weeks now and happen to check the ammonia level and it's high at about 2.0 so I did a 25% water change waited 2 more days and checked it again and its still the same so I went to petland and they suggested I buy ammo lock and I've tried it for the past 4 days and it still high any suggestion on What I should do I want to get new fish but scared they might die with the ammonia being so high pleased someone help me
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Sent from my SM-G930T using Aquarium Advice mobile app