Ant,
I would highly recommend Sakura Food, I personaly use it and it is also used by alot of the big names in koi. You can get it from costa or call him and find out who distributes in the cape.
It is locally manufactured every six weeks so it is fresh, compared to the other stuff that is 2 to 4 mnths old before it even gets to SA and then sits in the sun for 4 to 6 weeks., before clearing customs.
The food is a really high quality and i have not looked back since changing to it, and an added bonus is that on top of all of this it is cheap, A 4kg bucket is R95-00 or R580-00 (i think) for a 20kg bag.
and then, You can call chris neaves on this, forget all the wheat germ and that crap, you only need 1 food.
Please chris help out here abit.
Protein (min) 40.00%
Fat (min) 4.00%
fiber (max) 3.00%
Ash (max) 9.00%
Calcium (min) 2.20%
Phosphorus (min) 1.80%
Moisture (max) 10.00%
1% Spirulina & NO artificial clourants
Krill
Squid
Shrimp
Kelp
This is a full spectrum food and can be fed year round, all you need to do is adjust your feeding volumes depending on the seasons and water tempreture.
There is NO need for wheat germ and colouring food.
Rather feed this and add snacks of seafood mix, lettuce, and blood worms.
If you want i will give you the recipe