Thanks for all the good ideas. The dogmatix recipe sounds great, just got to get all the ingredients I guess and do a "cooking" session one day soon. Could probably freeze it and add the greens later?
The green water didn't produce many fish in the end caryl, that's why I was looking for something a bit more substantial for them to eat than just "greens". And the egg yolk trick sounds quite interesting too dennis, do you chop it up?
The banana peel is producing something, just got to get the microscope out and have a look what exactly is growing in that fluid. (Sorry to have put some members off their shop-bought bananas).
Any more good ideas welcomed.
Have a good weekend!