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Merrick
 Post subject: Dead perch
PostPosted: Jan 14th, '12, 19:04 
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Go out to check my system today and find every one of my perch dead... 10 400g+ perch and some little ones... Dead... I was going to harvest the biggest 2 for a feed on tuesday...
System is running well withing ok levels and the handfull of goldfish are swimming around like nothing happened

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RupertofOZ
 Post subject: Re: Dead perch
PostPosted: Jan 14th, '12, 19:10 
What water temps have you had today...
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3lmatto
 Post subject: Re: Dead perch
PostPosted: Jan 14th, '12, 19:12 
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today was pretty hot and humid man... :(
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Merrick
 Post subject: Re: Dead perch
PostPosted: Jan 14th, '12, 20:58 
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24 deg in tank

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RupertofOZ
 Post subject: Re: Dead perch
PostPosted: Jan 14th, '12, 21:18 
Not hugely warm....

Apart from the siphons into the sump... is the only other aeration the 25 mm return to the tank??? :dontknow:
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Merrick
 Post subject: Re: Dead perch
PostPosted: Jan 15th, '12, 01:02 
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Yeah I thought air too... But I have a 4 outlet with 4 fist size stones going flat out...

Wouldnt the 02 affect the goldies tho.

Considering I have quite an eventless run with my first system other than leaving the hose in for 2 hours and my ph sitting around 7.1. This came as quite the surprise...
I will now however, move the goldfish to my other system, harvest whats good, move my beds put in a bigger sump and add 2 more beds. I might insulate the tank too for good measure.

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mantis
 Post subject: Re: Dead perch
PostPosted: Jan 15th, '12, 08:02 
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My big tank has gotten to 32C water temp recently and all silvers cats and bass ok. You didnt overfeed by chance ??
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RupertofOZ
 Post subject: Re: Dead perch
PostPosted: Jan 15th, '12, 08:22 
Merrick wrote:
I will now however, move the goldfish to my other system, harvest whats good....


Goldies will tolerate lower DO better than other fish...

You say harvest "what's good"... having lost 10 x 400gm (and some small ones)... how many do you have left??...
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Merrick
 Post subject: Re: Dead perch
PostPosted: Jan 15th, '12, 08:28 
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i mean the veges
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earthbound
 Post subject: Re: Dead perch
PostPosted: Jan 15th, '12, 10:57 
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Perhaps come contamination that the silver perch are more susceptible to than the goldies?

That's more than enough air going in, even at these temps. We still have two trout going in the IBC system, even though yesterday it got to 28 in their water...
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Merrick
 Post subject: Re: Dead perch
PostPosted: Jan 15th, '12, 17:12 
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I topped up the tank 2 days earlier... But im doing that all the time without issue...
Maybe they just had enough and did a jonestown on me and drank the kool aid...


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tassdog
 Post subject: Re: Dead perch
PostPosted: Jan 15th, '12, 19:55 

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Merrick. I'm sorry to hear about your fish. Don't let it get you down bro.
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Merrick
 Post subject: Re: Dead perch
PostPosted: Jan 15th, '12, 20:37 
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everyone that does ap knows theres chances of these things happening and I have had no real issues previously so it was,a surprise but on a positive its allowed me to look at my systems shortfalls and now I have the tank basically empty I can spend some time making improvements and attempt to make it bulletproof ( as best I can). I have a smaller system running beautifully so I still have something to admire while I spend the next month or 2 building....

Or attempting to get the mrs to let my buy a byap system,hehe

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Charlie
 Post subject: Re: Dead perch
PostPosted: Jan 15th, '12, 21:10 
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earthbound wrote:
That's more than enough air going in, even at these temps. We still have two trout going in the IBC system, even though yesterday it got to 28 in their water...


Good chance you might get those trout through EB.
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RupertofOZ
 Post subject: Re: Dead perch
PostPosted: Jan 15th, '12, 21:15 
Not if the water temp stays that way for a day or two...
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