I have a tomato plant in a Topsy Turvey and it has been doing so well since I planted it months ago, but now it's getting yellow leaves everywhere. I know there could be various reasons for yellow leaves (I have researched them) but still am not sure what I'm doing wrong, help please. Here's the details on the plant and some pictures:
* I have been watering it every other day
* It gets over 6 hours of sun a day
* Every two weeks I pour fish water on the plant (perhaps the problem?)
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