Aquaponics is the marriage of organic hydroponics and aquaculture. Fish waste becomes organic plant food; the plants filter the water for the fish. Interested in learning more?
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  • Hi Charis

    Thanks for your comment. I've started to put bits of vege in the tank. I've read they like wilted lettuce so I started with that. They also take well to cooked pumpkin and potato, I've not tried raw, but not carrots. They also eat the duck weed which is great because that requires zero effort on my part.

  • Hi Favourite aunt, Im in a similar boat, Ive been using flakes for my fish, someone told me the adage of Garbage in Garbage out applies to fish so thinking of moving to include veges in thier diet, afterall they are growing them only fair they should take thier share :) 

  • What is the most economical way to feed my goldfish? I've just started my system and I've never kept fish so its a really steep learning curve. At the moment I'm using flakes from the pet shop as the safest option in the short term but I think it would be good to mix it up a bit.

  • Awesome thanks Shaun will do :) 

  • Who else wants to show what they are doing

  • Looks great nice and simple. Check your water does not go down too much at the flood stage or the fish may go into shock. A bigger holding tank would be better, if you can manage it, about six times the amount of water taken out whilst flooding, preferably one with a lid or partial lid if using a smaller tank. This will limit the amount of evaporation and stop ammonia condensing and becoming toxic too quickly. Don't forget it takes a few months for the system to balance so starting with just small lettuce or herbs is a good idea. Keep us up to date with your achievement's. 

  • So just finished my little start off setup - currently testing the media so I wont put the fish in until Tuesday if all goes well.  Since Im starting off Im doing the goldfish route until I've got my system sorted. 2170550566?profile=original  

  • Hi, loving the info on here.  Im looking at aquaponics and finding the information on here excellent.  Im starting off small (to get a feel for things and tweak my systems) before increasing.  Any tips or advice greatly welcomed, loving whats on this thread so far.

  • There are two main places to check what is acceptable to use in your region, your local DOC and Primary Industries office. In Dunedin its gold fish or fresh water cray

  • It seems that there are  only a few choices of freshwater fish allowed for aquaculture in NZ. Trout is not listed at all. Tilapia and Koi are also not listed as acceptable (they are noted as being "unwelcome"). Grass carp and White carp as well as Red Finned Perch are possibilities. Grass carp seems to make the most sense in that it is primarily a herbivore. It is interesting to note that Grass carp are noted as a threat to habitat. Does anyone know anything about the tilapia restriction? All three of these possibilities have a far longer growth curve with some fussy breeding issues. We are in the planning stages and fish choices determine many structural and hardware choices.

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Are you an aquaponic gardener already?

If you already have an aquaponic garden, tell us about it! Mine is currently in my 12' x 20' greenhouse that is being entirely run by the "waste efforts" of about 120 voracious tilapia.  You can see videos of my setup at  It is a flood and drain system run off timers with 2 150 gallon tanks and a 300 gallon rubbermaid.  Been growing cucumbers, tomatoes, herbs, beans, etc. all winter long.

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