Backyard Aquaponics
A place to discuss aquaponics

So i have had a lot of time to do nothing lately and got stuck into some thinking about putting some yabbies into my bigger FT. I was thinking along the lines of something to hang on my pond walls and go maybe 450mm deep, the length of my pond and around 600wide... basically a base with holes to flow water and waste in and out, a back, and two ends as i would use the front wall of my FT as the final side allowing me to see through my window....

OR

just put a heap of PVC off cuts in the bottom and a frame with some shadecloth on for them to reach shallower water, and see them when they come up..

thougths and ideas??

cheers
Steve

Depends on how easy or hard you want to make it I guess, I would just have the pvc cut-offs in the tank and chuck them in....only problem is if they fight and kill each other you'll be going for a swim

... And those yabbies who have departed this mortal coil, if hidden away from an avid APists keen observing eye, will contribute to major HSM: decaying = ammonia.

RODGER ON THE HSM... and the not so keen to jump into pond at 14.7deg. (21.2 was bad enough) so maybe if i got a nice 250L tub and floated it on the surface, it can go up and down with the cycles, be removed and if i have dead ones, i can just pull the tub to a side and pull out the offender/s ..... not to try and float a 1000mm dia x 420deep tub... (small i know but i only want a few) although i might put more in the smaller system

I have had a few yabbies in my system for a while now, seams I the majority of the yabs I loos are eaten by there "mates" when they shed there shells but i do seam to get a feed out of them and they have bread in the system so I am thinking if you had enough hiding places in a larger tank you could possibly have a self sustaining population?

I took the shade cloth hides out of my system last week and found there was about 15 yabbies left, one is quite large, there are a few medium and some small ones so I am intending to leave them bee and see if they bread, I did notice lots of gastroliths on the bottom so i know quite a few yabs got nailed when they attempted to shed.

there has been some discussion on here about keeping yabs in containers on the bottom of the tank as well, think i might try that again to.

... What about some kind of mesh container or plastic tub that has holes in it - like a vege crate, large sieve or similar - or even one of those floating planter thingys they use for water lillys and the like (BYAP has some I believe?) - wrap some dense foam around the edge and make sure it floats. Having the holes big enough to allow water flow, yet small enough to keep the yabbs contained? I reckon that'd be a go-er? May be a challenge to construct one with vertical sides that make any acts of escapism null & void! But having the container or 'yabby basket' meshed would make it easy if/when you need to remove it from the tank?

Make me one whilst youre at it!

BTx

maybe 3 or 4 of the NYLEX storage tubs, in clear, holes in the base, air stones in each one too maybe.. or put them above the return... 1 male 2 females to a tub..
could even put some goldfish in to add some colour.....

hmmmm