Backyard Aquaponics
A place to discuss aquaponics

more weights added to the list, but the chart needs updating

32cm 550g
34cm 580g

Hi team.

Growth rates & data look great for Silver's.

However what stocking densities are we talking here, how much are they varying amongst the different systems?

The growth data is heavily related to densities and system dynamics.

Cheers

Did a bit of a harvest today, culled 20 large ones from my original lot of SP (well I thought so until I noticed 2 large ones still in the tank)

water volume in the fish tank = 1,800 litres
stocking density = 110 silver perch (see - I put in the relevant info )
weight...length (of fish)
746...340mm
591...320
496...320
461...300
466...300
481...320
395...280
421...290
438...300
400...280
419...280

the rest were 350gms+

These SP have been off the feed over winter and really haven't started back into the feed as yet so think there would have been a big weight improvement with another couple of months (needed the room for the next lot of SP fingerlings )

All well and truely fit the trendline of the graph on Page 1..... nice stuff Les....

But of course there is just one thing you left out......

I can add about 18 measurements to this list

Skygazer, if you update the graph I can fix the first post up (oh the power )

flat batteries - put them on the charger - truly :Roll:

Ranga came around and is proof of the fish - got me when I was half way through cleaning them

22 180
25 240
25 250
25 300
26 300
26 320
26 340
27 300
27 340
27 350
27 400
28 380
28 400
29 460
31 480
31 520
31 530
31 560
32 580


6.810 Kg

sory been away for a while, ok will update in asap then you can update the thread.

as requested. updated graph.

I've updated the first post

Would be nice to have a second graph of weight vs growout time....

Anyone have data that could be compiled...

i.e .... when stocked, weight at harvest date....etc...

I'd be interested in comparing it to pond based growth rates over a similar period of time...

I suspect that it would at least be very comparable... possibly even a little better...

Perhaps everyone could keep data for this season and post accordingly....

Thanks Rope

Really needs to be a mature system unaffected by HSM and where the feed can be kept up to them at all times during the summer months to be a fair comparison to pond fish...so how advanced did you say your system was

Even allowing for such things Elk... AP results still seem very comparable...

Would be nice to have "empirical" data though...

And yep ... when my fish go into the system... I will record everything I can....

more measures

30cm 460g
31cm 510g
32.5cm 580g