It has been seguested in another thread that feed krill every other day to BTAs would cause them to bubble. I have approximately 36-40 BTA in my 300 gallon currently. While some of them do bubble on occasion, most of the time they do not. Personally I do not believe it will Mae a difference. I plan to fee 3 of my BTS krill every other day to see if it makes a difference. The three I have selected are high in my tank in a high flow area. One rose BTA to the left above the lower green and purple BTA and both green and purples were selected, so I can easily feed the same ones consistently.
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