I repotted this tomato plant as it randomly started growing in a smaller pot. I did wonder how it had started growing only when I used a jug of water rather than the sprayer. Turns out I really should read instructions on packets! I bought some peat free soil for the repotting and when I read the back properly I realised I should have been adding a lot more water to the soil and making sure there were no dry bits as it expands by about a third I think it was.