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 Post subject: Odd water chemistry
PostPosted: Sep 17th, '23, 13:33 
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Hi,

I have a 3 year old, 800L IBC system, with 8 adult silver perch in Melbourne.
Fish "seem" ok and I have a semi-full growbed in which the plants are also doing ok.
I don't check water chemistry all that often as nothing much changes.

However my most recent testing (API test kit) gave the following results:

pH: < 6.0 (API kit doesn't go below 6 but colour is darker yellow than chart)
Ammonia: 0.5 -1.0 ppm
Nitrite: 0 ppm
Nitrate: 20-40 ppm

It has stayed at these levels for the past 3 weeks.
Not sure if I should be worried and try to adjust.

Thanks for any advice.


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 Post subject: Re: Odd water chemistry
PostPosted: Sep 18th, '23, 09:30 
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To answer my own question:
Yes, I need to raise the pH before the fish do become stressed.


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 Post subject: Re: Odd water chemistry
PostPosted: Sep 18th, '23, 22:25 
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Looks pretty good to me.The PH could be up a bit.

The NO2 is 0 so the Ammonia is getting sorted out & the NO3 is at good levels.

Nothing to be worried about!.

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 Post subject: Re: Odd water chemistry
PostPosted: Sep 27th, '23, 08:35 
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Water is also rather murky.
Am raising pH slowly, and at same time will clean out the grow bed and wash the LECA - hasn't been done for 3 years.


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