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  1. Huge Ammonia spike!!! Help!!!

    Advanced Freshwater Discussion
    Im new to the forum but not new to the hobby, but need help my 60 gallon tank which was cycled completely before adding fish had a huge ammonia spike like 8 not .8 in a matter of 3 days lost 4 of the 6 small fish (under 2") even after I removed all fish did 30% water changes daily and every day...
  2. My tank is cycling again !!! Help. What should I do?

    Beginner Freshwater Aquarium
    I have 1 siamese and 1 molly in 20 litre tank. I had already cycled my tank before adding them. Since I had added them into tank all the water level had spike again I have done water change but still I have no luck I also have added ammonia lock which has lowered the ph level but has...
  3. Help! Nitrate spike in established tank

    Introduce Yourself
    Hi all I'm hoping you can provide me with some help and guidance. We have an 89 litre bout tank. It's about three years old and has been cycled for about the same time. The nitrate levels have been stable at 20 for months. We've now had a sudden spike. I did a water change on Saturday...
  4. mysterious series of events in 15 g

    Beginner Freshwater Aquarium
    Quick bit of background: 15 gallon planted tank with 7 cherry barbs (yesterday it was 8), 5 glowlight tetras and a bristlenose. Established for over 2 years, but I recently added some new fish after only having a few left. The mysterious events: Yesterday when I went to feed my fish, I noticed...
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