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How much BBS is too much for fry?

Ben Rhau

New Member
Hi, I'm feeding my fry BBS 3 times a day. I can see them eating it, but as these have only been free swimming for a few days now, they aren't very efficient at getting it all. Therefore, I spot feed them repeatedly to make sure they get enough. However, a lot of the BBS is getting lost in the leaf litter/mulm and I'm getting hydra. I don't think the adults can clean up the rest of the BBS that I spot feed, because the mother chases them away.

I have info on how to treat the hydra from other threads, so my questions are more about feeding and water changes.
  1. How do I know how much to feed? Is the strategy to overfeed and then compensate with water changes?
  2. During the water change, is siphoning from the top sufficient, or do I need to siphon the substrate? I'd like to clean the substrate, but am afraid of disrupting the fry.
  3. My typical routine is 25% WC weekly, or 12.5% twice a week. Is this enough for healthy fry?

Mike Wise

Staff member
5 Year Member
This is what I do; others will have different opinions. I feed only enough bbs so that none, or almost none, are visible after 5 - 10 minutes. I do 10 - 15% water change every week from the top of the tank for the first 2 - 3 water changes after fry become freeswimming. After that I gravel clean. I do water changes of 25% every 2 weeks on all of my tanks - except tanks with small fry. Then it is like above. When I change from once each week to once every 2 weeks depends on how the fish appear - and how lazy I am at the time.