Backyard Aquaponics
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Perth WA
http://byap.backyardmagazines.com/forum/viewtopic.php?f=45&t=15334		 Page 1 of 2
Author:  captplanet [ Feb 18th, '13, 12:51 ]
Post subject:  Perth WA
Hi there!

Been lurking here for awhile now...and I think I'm finally ready to build a system :)

Wish me luck!
Author:  bigwill [ Feb 18th, '13, 13:56 ]
Post subject:  Re: Perth WA
Good luck!!!!
Author:  gazza [ Feb 18th, '13, 14:26 ]
Post subject:  Re: Perth WA
Good luck and welcome captplanet.
:wave1:
The power is yours!!!
Author:  seamonkey [ Feb 18th, '13, 21:03 ]
Post subject:  Re: Perth WA
:wave1: Hi there captplanet. You know you can't leave us in suspense like that. What ya gonna build??
Author:  captplanet [ Feb 19th, '13, 12:51 ]
Post subject:  Re: Perth WA
Thanks for the warm welcome!

Size wise, I'm looking at a 5000L system but I don't intend on having it densely stocked. There's just a few things I need to work out before I order the parts that's not quite in any book...lol

for e.g. how much of a frog magnet will it be? My wife's support rests entirely on this issue!

I'm guessing if I have the fish tank above ground, it'll reduce or even eliminate the frog issue, but I was hoping to have it ground level for greater temp. stability.

I had my mind set on tilapia...until I realised they're now noxious...!!! I seriously doubt anyone who's gonna raise it for eating is gonna release it....

So I guess it's silver perch for me. I don't like the idea of having to restock it though. I'd rather have a fish that can breed in captivity (that doesn't look gross...)
Author:  PLJ [ Feb 19th, '13, 13:04 ]
Post subject:  Re: Perth WA
Welcome captplanet. Whether your fish tank is below ground or above ground, be in no doubt that it will be a frog magnet. Of course, if there are zero frogs in your area then they can hardly appear spontaneously, but they will come.
I have frogs in my big concrete tank and its walls are 2m tall sheer concrete.
By the way, your comment re your wife's conditional support is quite enigmatic. I originally read it that she doesn't want frogs - perhaps due to their croaking and the prospect of sleepless nights - but on rereading your post I'm not so sure. Maybe she loves frogs!
Author:  mattyoga [ Feb 19th, '13, 13:28 ]
Post subject:  Re: Perth WA
welcome Captplanet. I've only had one frog arrive in my GB, though both FTs are fully covered with shadecloth so they cannot get in the water anyhow.

We have frogs next door so that may be a way to stop them if no frogs are allowed.

Don't think you'll find a WA friendly species that will breed (other than frogs!!!!). I reckon SP are a good thing to start with and you can keep them for years if you don't want to restock ;)
Author:  captplanet [ Feb 19th, '13, 13:54 ]
Post subject:  Re: Perth WA
PLJ - your original reading of it was correct! She absolutely hates frogs :)

mattyoga - heh...I was hoping to eat them along the way...would be nice if they offered their children as sacrifice

I wonder if there's any breeding program that's looking at raising domesticated SP that aren't so shy?

Seeing as how SPs are omnivores....would they feast on the tadpoles?
Author:  gorotsuki69 [ Feb 19th, '13, 14:14 ]
Post subject:  Re: Perth WA
get a pet python
frog problem solved :)
Author:  Charlie [ Feb 19th, '13, 15:27 ]
Post subject:  Re: Perth WA
Everytime I read your user name I get that silly captain planet cartoon song roaming around my head :lol:


Captain Planet!
He's our hero!
Going to take pollution down to zero!


lol
Author:  mattyoga [ Feb 19th, '13, 15:29 ]
Post subject:  Re: Perth WA
was thinking along the same lines myself to solve my rat problem, though would not work well in the winter!
Author:  captplanet [ Feb 20th, '13, 12:09 ]
Post subject:  Re: Perth WA
Charlie wrote:
Everytime I read your user name I get that silly captain planet cartoon song roaming around my head :lol:


Captain Planet!
He's our hero!
Going to take pollution down to zero!


lol



hahaha...i hated that cartoon as a kid...but you gotta admit...that damn tune is rather catchy!
Author:  earthbound [ Feb 21st, '13, 09:37 ]
Post subject:  Re: Perth WA
captplanet wrote:
I wonder if there's any breeding program that's looking at raising domesticated SP that aren't so shy?


After seeing and hearing all about the process of breeding silver perch, you don't want to know... It's not something that you can even think about doing at home without spending many thousands of dollars setting up, and many, many hundreds of hours doing it.
Author:  captplanet [ Feb 21st, '13, 11:00 ]
Post subject:  Re: Perth WA
earthbound wrote:
captplanet wrote:
I wonder if there's any breeding program that's looking at raising domesticated SP that aren't so shy?


After seeing and hearing all about the process of breeding silver perch, you don't want to know... It's not something that you can even think about doing at home without spending many thousands of dollars setting up, and many, many hundreds of hours doing it.



So sad ain't it. It's probably not feasible for backyarders since the broodstock would be too small, but those who have a decent sized dam might be able to do it? According to the NSW gov website, SPs only need the rainy season (or rising waters) to trigger their mating instincts.

Although....this conflicts with Stuart J Rowland's report which indicates that hormonal injections are required....

Having said that, there is anecdotal evidence of SPs spawning naturally in captivity...apparently, there's this guy in Margaret river who has SPs multiplying like roaches in his dam!

I don't know much Joel, but I do remain hopeful! SPs are yummy!!
Author:  PLJ [ Feb 21st, '13, 11:57 ]
Post subject:  Re: Perth WA
I have a mate with large Silver Perch (Bidyanus bidyanus) who has witnessed them breeding, typically after pumping a lot of water into his dam, thus creating rising water levels as you say, captplanet. Their seasonal breeding amounts to nothing, however, I think because many eggs are lost to marron and other scroungers, and any fry that might result do not have the necessary volume of zytoplankton and flora required to get them started. This means you are likely to have much more success breeding them under controlled conditions at the moment when you are right to go with the necessary abundant tucker, and well oxygenated nursery tank/pond/dam for the fry. The injection of hCG (human chorionic gonadotropin) will quickly induce egglaying and thus maximise your chances of producing a decent batch of fry at a time when you are ready to care for them.
I am yet to give it a go so am not speaking from experience, but that is my understanding of the basic theory.
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