Thanks. I'm thinking they'll be beneficial here. Our average lows are 40 in May, 46 in June 53 in July and 51 in August according to The Weather Channel (seems a little too low to me). Much more cooling time than heating time. Our median last frost date is June 3 and median first frost is September 12 (average 97 day frost-free). I can't do anything to help on the back end, so I'm hoping to get the gains in May.
I have done some research and learned that the ideal root temperature for tomatoes is between 68 and 86 degrees (that may not apply in hydroponics as per the post above). I have also learned that an aquarium heater in an 'Inntainer' in a room that is a steady 59-63 degrees maintains a nearly constant 'soil' temperature of about 71-72 degrees. It will be interesting to see how they work with the wide fluctuations that occur outside in April and May.
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