Backyard Aquaponics
A place to discuss aquaponics

Temps for upcoming week

What do you think, is it worth trying to push the season out any further it finish them all off now?

mine were going sweet until a leak in my grow beds whilst at work and they all died. cause. no water. but reconstruction will prevent another episode. push it for a little longer they can handle temp of 26 and we have just had temps in excess of 35 for the last week. S.A

How's your water temp going?

Not bad at the moment but I'm concerned about the night time temps starting to creep up. Not realy in a rush to harvest them but don't want to come home one day to find out that I have missed my chance.

if you are going to push them to water temp of 26, you need muchos airation. MUCHOS.

I've had 39 degree air temps so far

As monya said, air is the key. Go longer if you want, but if they are a good size just harvest them, and remove the worry.

So when did Monya become an expert on trout????

My trout managed to survive water temp of 26 the other week, and there is only a t piece comin off between the pump and gb's and the return from the gb's.
I've got no other airation in there.
These are tough little buggers tho, the amount that i have put them thru

Yo jono,
The thing is that the water will acummulate heat and as the days are getting longer,
there is less time for cooling down. more time for warming up.
Also the ground temps near the fish tank will be warming up
radiating heat longer, sucking up heat less.
If your water goes green as mud you will need to do a large water change... be ready it will happen
(speaking broadly)
Unless your fish load is less than your system can handle....
Remeber that transpiration stops working at as certain temps so when your grow bed is not in flood the temp will rise to 30+.
...and is why I previously(until 6 weeks or so ago) had a continuous flood system.
Anyone can step in and add their findings
Currently the water temp is about 17 (1-2deg C swing.)
GTG

I think he has been reading up on what he is missing out on
...poor bugger all them regs and stuff

BTW anyone care to add weights of fish they've harvest?
The smallest here was 175g a snack with the average about 390-400.
The lengths have gone from 265 -325mm.

Our last lot of trout we got through to January, lost the lot after a couple of days of over 40 degrees, night time temp at 7.00pm was 40 and day time got up to 42. We put in extra air after that.

If i remember rightly it was 25 fish in 3000lts water.

two so far
first 280mm 290gm
second didn't mesure but 350gm

Well I have a fair bit of air and a good flow from the GB's. I'll keep monitoring the temp and harvest then slowly and cross my fingers.

Well I decided that rather than dallying around I would harvest them. 13 left in total, ranged from 230 - 425gm. Got 2 marinating at the moment and going to smoke them tonight. The rest have been vacuum sealed and frozen.

Now it's time to organise the barra, although at $20kg I'm considering changing to Silver Perch. Barra is only $15kg for fillets in Coles at the moment so it's hard to see the economics in growing them out.