Old fish transfer / new tank swap flow question

So I just moved my 4-5ish year old Cory Cat from a 10 gallon cold tank with HOB filter to a 40 gallon I set up with a Rena Filstar XP2 canister. He is swimming like crazy and I know this is initially expected. However the one thing I didn’t think of is that this tank has a LOT more flow than the 10 gallon he came from. Is this going to be a problem.? It appears he’s not used to it and normally likes to rest on the bottom, but almost doesn’t seem to be able to. I can’t seem to determine if the extra flow is going to be an issue or if he’s just getting used to the new environment. Any tips / info would be appreciated to ease my mind. Worst case I can put some more holes in my output tube to decrease the flow I suppose. Not sure if this is necessary.

 

He is all alone, no other cories? that is another reason for him to be stressed, all new tank, all new water current, new tank mates he doesnt know are freind or foe. no companions to turn to. It could take time to adjust. I recommend keeping the tank lights off for a few days. And getting him 5 or more of the same species of corie to school with.

 

Cories are generally fine with a flowing filter, mine do backflips and play in the outflows all the time...especially at night when they splash about like total wombats..

However a solo Cory will not be happy, he/she needs some pals to play with and feel secure with...especially in an aquarium that he/she is not accustomed to. They are a group cuddle fish....they might wander off on their own sometimes for peace and quiet but Cories need a community to thrive, feel happy and secure.

 

Yes he is alone for the moment. He actually always has been. I received the original 10 gal tank from a neighbor, and I actually did add a couple cories a while back, but slowly lost them. Since then I have learned a lot about the hobby, and when researching for the canister filter setup for my new tank, realized that my HOB filter media was probably not up to par. I do plan to add some more cories to the new tank in a week or so, but I placed the HOB media in my canister and I’m waiting for the tank to settle. My main concern was if the extra flow would be something he will easily get used to since he is used to a lot less. Thanks for the replies.

 

If you just recently switch filters, even if you did move the media, it is important to check the Ammonia, nitrite and nitrate. to make sure your tank is still cycled.
As for getting used to more current - yes he should, but like I mentioned, Its harder when there are a lot of changes all at once.

 

If you just recently switch filters, even if you did move the media, it is important to check the Ammonia, nitrite and nitrate. to make sure your tank is still cycled.
As for getting used to more current - yes he should, but like I mentioned, Its harder when there are a lot of changes all at once.

I do plan to check my parameters periodically and change probably 40% of the water at the end of the week. Maybe a dumb question, but since I have one fish in a 40 gallon tank right now with all new, treated water, how fast can the ammonia etc. rise to a harmful level? I know the BB in the media from my old filter needs something to feed on.

 

It will surprise me if you see any ammonia in a 40 gallon tank with just the one little cory in there. As you gradually stock this tank you may start seeing some though. Right now there is only enough bacteria the handle the bio-load of the one little guy. As you add more fish the bacteria is going to have to catch up with the increased bio-load so you can expect spikes.

Did you move anything other than just the filter media over from the small tank? If not then you will have left behind the bacteria that was growing on all the surfaces in that tank. Even then there really wouldn't have been a great deal of it. The amount of bacteria depends on the amount of ammonia produced in a tank. With it just being the one fish there wouldn't have been a lot of ammonia.

If you stock this tank slowly you shouldn't experience really high spikes in ammonia and nitrites but expect to see some. You will basically be doing a fish in cycle each time you add fish. Personally i would go ahead and add all the planned stock all at the same time and just get it all over with at once. It will entail a lot of water changes to protect the fish but as long as you keep both ammonia and nitrites down as low as possible with water changes the fish should come through it just fine.

 

It will surprise me if you see any ammonia in a 40 gallon tank with just the one little cory in there. As you gradually stock this tank you may start seeing some though. Right now there is only enough bacteria the handle the bio-load of the one little guy. As you add more fish the bacteria is going to have to catch up with the increased bio-load so you can expect spikes.

Did you move anything other than just the filter media over from the small tank? If not then you will have left behind the bacteria that was growing on all the surfaces in that tank. Even then there really wouldn't have been a great deal of it. The amount of bacteria depends on the amount of ammonia produced in a tank. With it just being the one fish there wouldn't have been a lot of ammonia.

If you stock this tank slowly you shouldn't experience really high spikes in ammonia and nitrites but expect to see some. You will basically be doing a fish in cycle each time you add fish. Personally i would go ahead and add all the planned stock all at the same time and just get it all over with at once. It will entail a lot of water changes to protect the fish but as long as you keep both ammonia and nitrites down as low as possible with water changes the fish should come through it just fine.

It will surprise me if you see any ammonia in a 40 gallon tank with just the one little cory in there. As you gradually stock this tank you may start seeing some though. Right now there is only enough bacteria the handle the bio-load of the one little guy. As you add more fish the bacteria is going to have to catch up with the increased bio-load so you can expect spikes.

Did you move anything other than just the filter media over from the small tank? If not then you will have left behind the bacteria that was growing on all the surfaces in that tank. Even then there really wouldn't have been a great deal of it. The amount of bacteria depends on the amount of ammonia produced in a tank. With it just being the one fish there wouldn't have been a lot of ammonia.

If you stock this tank slowly you shouldn't experience really high spikes in ammonia and nitrites but expect to see some. You will basically be doing a fish in cycle each time you add fish. Personally i would go ahead and add all the planned stock all at the same time and just get it all over with at once. It will entail a lot of water changes to protect the fish but as long as you keep both ammonia and nitrites down as low as possible with water changes the fish should come through it just fine.

I only moved the filter media from the old tank into the canister filter. This seemed more practical to me than hanging another filter. I set up the new 40 gal with sand and new decor so nothing else really came over. It’s an octagon tank so it’s tall. I plan to add a couple more cories at first in a week or so, then decide on some mid level fish, possibly schooling fish.