Backyard Aquaponics
A place to discuss aquaponics

Dunno to be honest - I don't think the depth needs to be big tho as they slouch around the bottom - except Simmo's that like to escape.

i reckon 20cms would be heaps.

T off a 15mm or 20mm pipe from your flood piping and run it into your yabbie bed.

Then run the same size return back to your tank. cap the return and drill 8mm holes in it to stop the yabbies getting through. you could add a small sump in the return line and take water off the top back to the tank so that when they breed (now is breeding time) the babies dont end up as perch food.

This way you have regualr water flushes through to both keep temps down, provide oxygen, provide nutes for the duckweed.

Get onto it F&F

what about something to feed the yabbies

they will eat the duckweed plants as they die of and fall to the ground

....bottom of the tank - F&F forgive Monya, he's a bit rattled att

LOL, nothing gets past you mate!

oldies tend to read very slowly and thoroughly................

Put an assortment of different sized pvc ppe cut offs in there so they don't fight too much, and chuck a 2 pellets per yabbie in every 3rd day or so.

Maybe a thin layer of coarse sand (like the stuff you showed me) or some aquarium gravel. They like to rumage throught the substrate

Thanks steve good info.

C1, you night owl you!

No worries.

off to bed for me, i've pull TOO many late ones, i'm getting run down and vauge at work......i caught myself staring at my toolbox today (hope it wasn't for too long)

If you want to give your yabbies a treat every now and then, chuck in some freshly steamed carrot and pumpkin. About 1 cm cubes. Not too much, a few more than one each. Watch them grab hold of it and hide in a corner and eat it. They are detritis eaters so anything soft and fleshy will be fine. Algae blocks are good too, just to vary their diet and chook pellets for protein.

Don't know if this is a new link or not:

http://www.p2pays.org/ref/09/08875.htm

Duckweed is a good cray food, so are carrot skins and snails.
There are a lot of australian plants that make good cray fodder too. Most are fluffy looking algae/plants.
All depends on what your filters can handle but I have sure fed a lot of veggie scraps to my crays over the years.

my duckweed is having babies

Look at that stuff go,
today your pond....
tomorrow the world