I have a 120 gallon tank and i am having problem keeping the temperature down. I have ac but hate using it if we dont need to. So my husband had this idea of using the crawled space under our home to cool the tank. Our crawled space is 4 feet so it s easy to worked down there. His plan is to go down and dig a hole, buy some clear tubing which would go from the tank to the hole. In the hole you would have maybe 25' of tubing. Basically we would use the ground to cool the tank. I would need a pump to return the water to the tank. What do you think ?