The Leaves on my Chilli plants are turning yellow and falling off, starting at the bottom of the plant. This only started happening when I repotted them using a mixture of General Purpose potting soil from a Gardening store and fairly sandy soil with quite high clay content from the local countryside (Mix 50% store bought soil/50% local soil).

I repotted 7 days ago today and I've watered twice, once on potting day and again 3 days later with no feeds or additives. There are no apparent pests on the plants and apprt from the yellowing the plants look great, bear fruit and are continuing to grow.

Please advise asap.