tkfury

I've been thinking and I'm still a little worried. By the time I learned about the cycling progess my father's tank had been running for a few years and so I started out being able to do fishless cycles. In order to set up my 75g I have to place it were my 22g currently is - which is a problem. I'll be using bio-spira ontop of the gravel and filter from the 22g but I'm still a little worried about my cories and otos. Other than the "random oto deaths" and the deaths of both my orginal tetra and danio (each within days of me adding 2-3 of their own kind) I haven't lost any other fish yet - and I'm rather proud of myself for that. I've been lucky enough to be able to learn from the mistakes others have made on the site.

I'm mostly worried about my cories and otos though. I've been thinking and maybe I could move them in with my tetras (10g) for a few days (about doubling the bioload so thats not going to be very health, right?) and then my killifish into the other 10g and move my zebra danios into the 75g, being the hardiest? Or maybe just move the killifish and zebra danios into the 75g, leave the tetras alone for now (I'll be converting their tank into a qt once everyone is in the 75g) and let the cories and otos take over the other 10g until the tank has had time to estabilish? Or perhaps with the bio-spira its safe to add the killifish, cories and otos and I can just leave my tetras and danios alone for a little while longer? Either way I know I'm putting someone at risk but I want to make sure I'm doing what I can to minimize that risk. I've been working on checklists for awhile to try and make sure I can make the move and set up go as quickly and smoothly as possible.

COBettaCouple

I'd probably add the least territorial fish to the 75g first and move up in territorialness as you add the other fish. So I would put the Corys and Otos in first. Probably I'd put the killifish in 1 of the 10g tanks and the cats in the other until the 75g is setup and the BioSpira dropped in. Daily PWCs on the tank with the killifish added along with a little extra Prime outta keep them ok for a few days until you can add the killifish to the 75g.

tkfury

Alrightly, after a few rereads I think I understand what you're saying. So with the bio-spira just add the cories and otos then after a few days (or is it weeks?) then either the zebra danios or the silver tip tetras (my tetras are very, VERY shy and the danios are likely to be all over the tank in a matter of seconds - so tetras first?) and then lastly the killifish?

COBettaCouple

That plan sounds good to me.

You can add fish right away with BioSpira so I'd very slowly acclimate them about an hour or so after the BioSpira.

tkfury

Great - thank you very much ^_^