Brookster123
Aquarium Advice Addict
I'm going to be removing 4 Odessa barbs and 4 zebra danios from my 29 gal 4 month old tank, 2 weeks later I will add a l134 Pleco and 2-3 hexazona barbs, there will still be fish present in between.
The fish I'm adding two weeks after removing the first group will probably equal 50% of the bio load. Hopefully everything transitions smoothly.Removing fish don't cause mini-cycle. If you decrease bioload, then BB's number will decrease. If you add more fishs later, then a mini-cycle can occur, as the BBs number will have to increase until they're enough for the new bio-load. Sometime mini-cycles are unperceptibles as they are too small to care about it...