gassed my rasboras! - The Planted Tank Forum
 
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post #1 of 5 (permalink) Old 06-13-2013, 12:31 PM Thread Starter
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gassed my rasboras!

I've been steadily increasing pressurized co2 in response to curled leaves and other signs of co2 deficiency in my plants. Ordered a drop checker at work yesterday to monitor the ppm...

came home to an ALMOST gassed tank, with my harlequin rasbora's looking the worst of the bunch. Lost 3 of 5, but nothing else... CPD, habrosus, shrimp, etc all seem fine today. co2 must have built up slowly, even though I have plenty of surface agitation from a spraybar.

I thought it was unusual that the harlequins were the most sensitive, any thoughts?
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post #2 of 5 (permalink) Old 09-07-2013, 02:24 AM
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they seem very very sensitive, they are always the ones gasping for air while my neons swim happily...
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post #3 of 5 (permalink) Old 09-07-2013, 09:44 PM
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I agree they seem a bit sensitive, at least compared to cories and otos.

One thing I'm trying right now that seems to help, is to schedule a 15 or 30 min break in co2 in the middle or later portion of you photoperiod. Helps to prevent co2 from building up.

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post #4 of 5 (permalink) Old 09-08-2013, 10:23 AM
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I'm using pressurized co2 as well for my 2.5 tank. no funny gadget nor hi-tech calculation. when my plants scarce at first, i just do 1 bubble per minute. now that i have jungle, i pumped up to 1.5 bpm but no more 2 bpm. all seems just fine.
no spraybar, outlet underwater.
8 golden barbs, 6 ruby barbs, 6 checker barbs, 3 sterbais. used to keep harlequins too back then. still all ok with my lazy-man method
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post #5 of 5 (permalink) Old 09-08-2013, 08:10 PM
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Never adjust CO2, then leave for the day.

Adjust CO2 only when you are going to be around most of the day.
Also, adjust in very small amounts each time. Patience is the key there.




Regards,
Tom Barr
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