Hahaha thanks Sam
Yes I cultivate them myself. They are the easiest type of live food to cultivate, they're extremely productive and make an ideal staple food. And you don't need to start new cultures after a certain period like you do with whiteworms when the soil becomes full of waste.
I use a 50x25x25cm tank, and a 2cm layer of dark pea gravel. I find a temperature of 18-23°C works best for the worms. I just use plain tap water and I also run an air pump in the tank. The pH is around 7.5-8 I think.
I feed them Omega One flake. I put the flake in a small dish with some water until it becomes soggy, and then I suck the food up with the turkey baster and then I gently squirt the food onto the gravel (I turn off the air pump first to allow the flake to settle on the gravel). The best way to feed them is little and often. Too much food and it starts to rot and kills the worms.
When I harvest them I suck them up with a turkey baster and feed them straight to the fish.
Once or twice a week I do a large water change. I use a gravel vac and siphon them into a bucket, and then I wait until they have settled on the bottom of the bucket and then I decant off the dirty water. I pour the dirty water down the drain, and them put the worms into a cup. I refill the bucket with fresh water and pour that into the worm tank. I then feed the amount of worms required to my fish, and the rest go back in the tank. I also sometimes do small water changes every now and then (without vaccuming the gravel) just to keep the water in good condition.