re: Bottom Rot on Tomato's

I had this problem a few times this year and got to reading up on it. Like they are saying, it's a calcium problem, but it's more than likely as a result of irregular watering. If the roots don't have enough water when the bloom is developing then it can't supply the calcium to it that it needs, so it can happen even in perfect soil.

As to epsom salts, I saw there were a couple of different groups on that. Old school says go for it. Others say it's actually not that helpful because you're replacing the calcium you need for a different one and what you are actually doing is watering it in and getting the benefits of that. Personally I have no idea, I just watered them regularly and it stopped.

They all agreed on using calcium supplement tablets though as the most freely available calcium for the plants. Grind em up, put them in the roots. Water.