Last night I turned off the venturi bubbler on my community/loach tank to take some pics. I forgot to turn it on again and went to bed. This morning I woke up and the hillstreams didn't. 4 G. kweichow, Sewellia, G. multi. G. cteno. All dead.
That air addition is absolutely vital, but I did not think that the margin was so close.
Well, I guess I better get to work on the dedicated tank I was talking about. Sadder but wiser.
Wipeout
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Sorry to hear it.
I can empathize KK. Lost a whole tankful of hillies and babies. ;-( Was a major bummer.
I can empathize KK. Lost a whole tankful of hillies and babies. ;-( Was a major bummer.
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Resistance is futile. You will be assimilated.
Very sorry.
It seems to be essential to have multiple air supplies in case one gets turned off or broken.
I lost a hillstream when the air hose got accidentally disconnected for a few hours, despite the presence of a HOB filter and lowered water level. Right now the policy on permanent hillstream tanks here is 3 air sources.
It seems to be essential to have multiple air supplies in case one gets turned off or broken.
I lost a hillstream when the air hose got accidentally disconnected for a few hours, despite the presence of a HOB filter and lowered water level. Right now the policy on permanent hillstream tanks here is 3 air sources.
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wasserscheu
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Sorry about the loss TKK,
...and thanks for notification! I would have never thought, that one night without bubbles would be fatal!
I´m also planning a hillstream-"department" in the new tank. My current tank runs without bubbles - only O2 from plants. Plants take about have of the swimming space. At night the 2 filters, the plants and the fish are O2 consumers for 9.5 hours (without O2 supply, I avoid bubbles because of CO2 loss due to bubbles, as I´m adding CO2 to the water...),
My current setup may not be sufficient for some hillstreams
... Do you have any other O2 consumers in the tank (old wood?, or so?)
Thanks & Greetings
Wolfram
P.S: ... I did carefully study Martins article about O2 metabolism on hillstreams...
...and thanks for notification! I would have never thought, that one night without bubbles would be fatal!
I´m also planning a hillstream-"department" in the new tank. My current tank runs without bubbles - only O2 from plants. Plants take about have of the swimming space. At night the 2 filters, the plants and the fish are O2 consumers for 9.5 hours (without O2 supply, I avoid bubbles because of CO2 loss due to bubbles, as I´m adding CO2 to the water...),
My current setup may not be sufficient for some hillstreams
... Do you have any other O2 consumers in the tank (old wood?, or so?)
Thanks & Greetings
Wolfram
P.S: ... I did carefully study Martins article about O2 metabolism on hillstreams...
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The Kapenta Kid
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Thanks for all the comments.
Wolfram, there is driftwood in the tank, but it has been there for years and is so totally overgrown with stray cladophora algae that I doubt it has any effect on water chemistry.
The tank is heavily stocked so oxygen consumption will be high. I also keep the temp at 25 which suits everybody, but there is a penalty in terms of dissolved oxygen content.
My guess is that I was running close to the margin, vigorous air injection kept everything fine, the hillsttreams were healthy and growing. but there was no reserve capacity so to speak, and stopping oxygen addition for 8 hours or so meant that dissolved O2 levels rapidly dropped below the hillstreams' minimum requirements.
Wolfram, there is driftwood in the tank, but it has been there for years and is so totally overgrown with stray cladophora algae that I doubt it has any effect on water chemistry.
The tank is heavily stocked so oxygen consumption will be high. I also keep the temp at 25 which suits everybody, but there is a penalty in terms of dissolved oxygen content.
My guess is that I was running close to the margin, vigorous air injection kept everything fine, the hillsttreams were healthy and growing. but there was no reserve capacity so to speak, and stopping oxygen addition for 8 hours or so meant that dissolved O2 levels rapidly dropped below the hillstreams' minimum requirements.
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