Backyard Aquaponics
A place to discuss aquaponics

and if not, any of you gurus know what time of year the swao usually happens? my tank is reaching a max of about 23 deg on a day like today (sunday)
i think the warmest i have seen it is 24 - 26
cheers
Ben

Well yes, I have put barra into my tank. Although I have also got an electric heater with thermostat set at 24degC. And I also cover my tank to stop the heat from escaping easily.

IMO, waiting another month would be good. Unless you are willing to spend money to heat the water.

yeh my thoughts exactly
i only have 9 left, going to leave em in till arter exams (4 weeks) then make a smoker and harvest

warm one today, tank got to about 24ish . . . .will have to break out some ice blocks tomorrow me thinks

How did this topic go from barra to trout

because i can multitask?

That delicate changeover time...

Yeah, 35 tomorrow here Another 20 Trout removed forcibly this evening

Put in 16 barra in on 1st, one causatly today as the weater reached 3oc on the water temp. Trying to grow barra for the first time

Well I believe barra will do alright up to 39degC water temp. My tank temp reached approx. 35degC last year and the barras were enjoying it in there.

Are you heating your water in the night? Huge temperature fluctuations between the day and night will stress fishes. And also aeration, you need lots of aeration as water temp increases.

they're kinda the yin and yang of the AP world (in Oz).

what is the min temp for keeping barra?
20ish?

Do you mean the temp that they are unhappy at? The temp they stop feeding at, the temp where they start laying on their sides, or the temp they actually die at?

I reckon you want to keep them above 20 if possible, the higher the better. At about 13-15 the cark it, 15-17 for an extended time and they will get diseased and die over time. 17-20 they aren't happy.

Of course this is all fairly rough..

cheers
so 20+ and i should be in the clear . . . hmmm
picking a time to do the swap isnt easy . .

Watch your Barra over the next week people, getting a bit cool...

Sunday Mostly sunny. Min 11 Max 24
Monday Mostly sunny. Min 12 Max 29
Tuesday Partly cloudy. Min 14 Max 27
Wednesday Few showers. Min 14 Max 23
Thursday Few showers, easing. Min 13 Max 22
Friday Partly cloudy. Min 10 Max 22