View Full Version : My poor fish
24th November 2010, 09:11
3 straight days of over 30 degrees and all my Trout have died. Their water temperature has hit 25 degrees causing this. So obviously Trout are not a good summer fish for Adelaide without using expensive water coolers. So I pose the question what is the best fish for my location. Too cold over winter for Barra or Jades but too hot for Trout in summer ? What do you guys think ? From what ive heard silver perch will be very slow growing over our winters the water can drop as low as 10 sometimes.:frustrated:
24th November 2010, 09:25
others will chime in about this im sure but, 25deg shouldnt kill ur fish, my very novice (never had or looked into having trout) opinion is not enough oxygen in the water? all your other levels are good? ie ammo ni na pH?
24th November 2010, 09:48
I was 22.9 in the tank all night (and they are still eating), I have 40 in an IBC
Please tell me, whats your setup and what did you do to try and keep the temp down? Do you have aeration - like air going in? If so, how m uch :)
24th November 2010, 12:37
Water temps of 25... will kill your trout.... as will constant temps above 22....
You can alleviate matters by...
Culling down your stock density
Icing the tank at night
Changing out water as a front comes through and temps fall
Seriously... I think most people need to just bite the bullet and cull their trout... especially those in SA... it gets hot down there guys... and it's not really summer yet...
24th November 2010, 12:53
My temp is 21 and falling however I adopt everything John has posted above and also turn of GB throughout the day with the first flush of the GB going onto the lawn (super heated water and stones)
24th November 2010, 13:03
Not disagreeing with you Rupe, just offering my very recent observations in my system:
My trout survived a day of 26.7º water temp. The day after it only dropped to 26.1º and for the three days following that it was at 25º. They were very slow, but they survived. When it dropped back below 24º they showed some interest in food again, but were still very slow. I left them for a few days and they didn't pick up so I pulled them out and changed over to the Barra for summer.
It's all about the Oxygen, but no matter how much oxygen, any sustained period above 25º knocks them around.
24th November 2010, 20:46
a fan above the ft can help too, i took 1 degree temp out of the ft with an office fan pointing at the water. only ever struggled for 3 days in june with high temps. put 2l bottles with ice in as well
24th November 2010, 21:16
good point :)
25th November 2010, 11:20
Ended up biting the bullet and culling the rest before they all died. I am using 2 nally bins each had about 20 trout each. air stones in each tank and water levels all good. I have 30 juvenile silver perch in the same tanks and they are fine.
25th November 2010, 11:21
temp down to 17, fish doing back-flips try to catch the food when I throw it in ;)
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