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Co2 tragedy and Crypt confusion

WiggyH

New Member
Joined
6 Oct 2021
Messages
19
Location
Crowthorne
Morning all UKAPS peeps.
Sadly, after 12 months running with my aquascape, I had a catastrophic failure with my Co2 unit.
5 years old and having run without issue. I took a phonecall from the wife, telling me that I had some dead fish and others swimming very odd. Thankfully I was on the way home, so could assess. Immediately apparent that my Co2 checker was bright yellow. Had been steadily on green. Sadly no control could be gained over the regulator, so it was switched off and an immediate huge water change had to be carried out.
As the dust settled over the coming days, it appears i lost all 8 of my Rummynose tetras, 1 of my Ottos and numerous cherry shrimp. Thankfully, though, despit them looking very ill, my catfish and 2 female Pearl Gouramis survived.
I was surprised, as I would have thought that the Tetras would have been more resilient than the Gourami.
So, with the help of Co2 Supermarket, we have diagnosed a failure of the regulator, so to ensure the safety of my livestock in the future, that will be disposed of. New unit expected today.
Big shout out to Martin at Co2 Supermarket for excellent service, helpful, prompt and will certainly get my business again.
That's the first part to the story.
On the up side, I have noticed a change in my plants.
As I had no Co2, I put the chihiros wrgb 2 lighting down to my 'holiday' setting, which gives only 90 mins of light. I didn't want high lighting and no Co2 to cause algae issues.
During this lighting break, I have noticed that my Crypt varieties have accelerated their growth. Looking healthier than I have seen them for a while.
I have noticed this before, on return from holidays but didn't think too much of it.
Do Crypts like a dark period. How come they have suddenly grown. Does anybody else find any benefits from lighting breaks/dark periods.
Hopefully not going to kill my fish again.
 
Sorry to hear of your losses, it is always a risk with CO2.

Reducing the lighting period to 90 minutes is an unusual choice, and would likely to be more detrimental to the plants - the better choice would have been to simply reduce the intensity by a substantial amount.

As for the crypts, some do seem to do better in some gloom than they do in bright light. I've also found some crypts do a lot better without CO2 injection than they do with it - I don't know if that is something to do with pH or something else.
 
Are the other plants in the tank doing OK? If that's the case , why not try increasing the duration of lighting and ,if possible reducing intensity ; and running the tank without CO2 and with reduced ferts for a while and see what happens?
 
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