Backyard Aquaponics
A place to discuss aquaponics

gday people
im interested in putting in a crayfish only system...

i was speaking to a informative aquaponics nice lady in chat on a different forum by the name of jaymie and she told me to come here for answers to my question

i was thinking a low laying system maybe 1ft deep and watever x watever wide with a walkable floor on top of it

something jaymie mentioned was there might be a need for it all to be deeper for the crays to grow.. somthing to do with pressure etc?..

is it possible to do a setup somthing like this where the crays will grow to decent delicious edible size in 1 foot deep water?

hope to hear some responses to this
thanks guys,, awesome site.. absoloutly impressed at wat yas do
im just a dirt gardener (ATM) this is amazing wat some of yas have goin on here!!!

kudos

cheers

welcome chookshit.

I have no experience with yabbies, but I reckon you should have a go. We all like to put our hands up every now and again and take a hit for the team.
Keep us posted and I'm sure others will have more ideas. Check out simmo's systems he keeps marron and yabs. and Joel has yabbies in blue barrels, so I can't imagine the 12 foot deprth being too much of a problem. O yeah, once I had yabbies in an aquarium and they grew really well, go for it!

do the fish or crayfish need light requirements? or are they happy to be kept in minimal light,, obviously not pitch black conditions! i figure they come from dirty murky waters and would be happy in dark conditions?

a variation in light over a 24 hour period is the way to go. Simulate nature

i was thinking a wooden floor over the top.. typical porch style with a bit of a gap between each slat, im sure that would allow enough light to penetrate thru.. wat do u think?
cheers..

sounds alright as long as it is in a fairly well lit spot in the first place.

Sounds fair enough to me as far as light goes chook......

Just rememeber you get pretty hot up your way in summer.....

You might need the extra depth of water, water exchange or some cooling just so you don't poach the yabbies.....

Dead give away when it's too hot for em.... they turn pink/red ..... lol

was thinkin about putting it under the back deck,, were in a 2 level house with a back porch. was thinkin underneath,, its not lacking in light,, but not abundant either.

thanks for the replies..
where do i get baby crays from??

only problem i see with a minimal depth is that your evaporation losses will be HUGE and the area required to give you a decent water volume (water volume = thermal and chemical stability) will be high.

But hey, give it a go!

Actually that raises a question for all those that have/are stocking yabbies....

How often do you exchange the given volume within your tank....

i.e if you've got a 200ltr bin... over what sort of time period would you exchange 100% (by what ever means) of the water...??

An easy way to get young fresh water crays is to breed your own Chook... They breed like rabbits, just buy large live yabbies or redclaw from your local fish monger, bring em home stick em in your pond and away you go... Might be an idea to make sure you have both sexes in there I guess...

I don't understand EB - can you explain further

Ask your mum VB...... Better still, ask your wife...

Do yabbies eat insects like mosquito larvae? if not you should put in some sort of fish allso to deal with the pest, mollies maybe? With that shallow dept the small live bearing types of fish is your best bet.

Where you going to put the GB?

good to see you over here CS! I told you you'd get heaps of answers I may have left out the bit about also getting many more questions back in return