tomato plants should be flushed
 

The food question is that I am told that my tomato plants should be flushed with clean water at the before I am going to harvest. I was wondering if this is necessary and if so how long should this be done. By the way I have learned a great deal about hydroponics from your site and hope to learn more in the future.

I have never flushed mine and I sure don't get any complaints on the taste of my tomatoes. Tomatoes are harvested sometimes for months as they ripen so it would be a good idea to flush your system every few weeks anyway.