cost effective to grow with hydroponics.

[Beverly]

How much water does your garden take up a day. In the long run do you find it cost effective to grow with hydroponics. I currently have a ebb&flow garden. I am using 20 to 25 gallons of water per hot day (85+). I have 16 tomatoes plants. nutrient is $30 per gallon. Using 2 cups per 25 gallons. While I have been able to produce large amounts of tomatoes, there per unit cost seems high.