Yo i got a aeroponic garden with a ten gallon reservoir and I'm having problems with water. I don't want to go out and buy 110 gallons of water through out the grow. I live on a well and i was wondering the procedure id need to follow to make it usuable for my system. It uses a pump with a filter on it(my garden) but my water has alot of iron and other trace minerals, would they cause harm to the plants? Is it possible to never change the water put just add in what is missing at the end of two weeks with more nutes? To save money.