I am trying greenhouse hydroponics for vegetables like tomatoes, cucumbers and squash for the first time. I also have several types of greens, for salads. I am wondering if it would help the plants to keep the water cooled. The temperatures are now in the 70s outside, and the inside temperature is getting quite high. I know this will get much more as summer is getting close. I have relatively cool spring water and thinking about running it through a coil in my storage tank and cool the plant water down. This will help keep the roots cooler. Does this make sense, and how much help will this provide. What would be a reasonable temperature to aim for? TNX