Reuben
Member
- Joined
- 17 Feb 2013
- Messages
- 179
Hi
I purchased 9 Harlequin rasbora at the weekend and although I have not adjusted my Co2, they appear to be having problems with it.
The cardinal and black phantom tetra and ottos - which have been in the tank for a year - are all fine and in very good health.
The rasboras looked pretty weedy in the shop, but I figured they were either young or in need of feeding up.
Basically 3 hrs after Co2 comes on three of them show major distress drifting and spinning out of control or gasping at the surface. Obviously I stop the Co2 straight away, and 30mins later they are all fine. All my other fish are behaving normally during this.
So are the rasboras able to acclimatise to Co2 injection? Is there a physical adaptation a bit like humans adaptation to altitude? Or it there some underlying issue that I'm not aware of.
Bit frustrating as when I turn the Co2 off I then have to turn the lights out a bit after for obvious reasons.
This is bolstering the feeling I have that the low tech approach (by which I mean no Co2 addition but still large water changes) is generally conducive to a better living environment for the fish - assuming plant health is good -(a'la bucket!).
Hope someone can help with this, I'm not keen on reducing my Co2 (then lighting) as I've finally cracked the application of Co2 to grow plants well, and not all the fish - within the rasbora group are affected.
Thanks
I purchased 9 Harlequin rasbora at the weekend and although I have not adjusted my Co2, they appear to be having problems with it.
The cardinal and black phantom tetra and ottos - which have been in the tank for a year - are all fine and in very good health.
The rasboras looked pretty weedy in the shop, but I figured they were either young or in need of feeding up.
Basically 3 hrs after Co2 comes on three of them show major distress drifting and spinning out of control or gasping at the surface. Obviously I stop the Co2 straight away, and 30mins later they are all fine. All my other fish are behaving normally during this.
So are the rasboras able to acclimatise to Co2 injection? Is there a physical adaptation a bit like humans adaptation to altitude? Or it there some underlying issue that I'm not aware of.
Bit frustrating as when I turn the Co2 off I then have to turn the lights out a bit after for obvious reasons.
This is bolstering the feeling I have that the low tech approach (by which I mean no Co2 addition but still large water changes) is generally conducive to a better living environment for the fish - assuming plant health is good -(a'la bucket!).
Hope someone can help with this, I'm not keen on reducing my Co2 (then lighting) as I've finally cracked the application of Co2 to grow plants well, and not all the fish - within the rasbora group are affected.
Thanks