My! How They've Grown!

I don't exactly have a bumper crop, but there are a few luscious tomatoes ripening on the vine in my organic soil, self-watering pots. I'm not sure what I did wrong, but after about 15 small fruits establishing themselves, all systems seemed to shut down. No new fruit and no bigger fruit and the rest of the blossoms began to shrivel up. I've probably been overwatering trying to over compensate because now the leaves are yellowing. Anyway, it was a noble attempt and I did put our compost to good use.