LiorM Posted December 24, 2022 Share Posted December 24, 2022 (edited) Had a HOB die on a three year old tank and lost some beneficial bacteria. aquarium is well establisehd, planted and has an extra sponge filter which kept on running, and a power head helping circulation. Currently facing a bacterial bloom, moderate , not too bad. Water parameters are still fine so cycle not crushed completely. I am monitoring ammonia and nitrite levels, but oxygen levels are low, around 5ppm at 80degrees (can't lower much more because its a discus tank which usually runs at 84) I understand that the bacteria is consuming oxygen which will probably lower O2 levels, so my question: Do I add beneficial bacteria or not? will added bacteria eat up more O2 and lower levels even further? Thank you! Edited December 24, 2022 by LiorM Link to comment Share on other sites More sharing options...
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