I've had a Tower Garden for about 2 years. I use FloraDuo A and B instead of Tower Tonic. You only use half as much and its cheaper. Its made by General Hydroponics and you can get it at your local hydroponics store. Results are great. Also invest in an outdoor water filter for your hose. They make them for RV's and campers. You can buy it at Walmart, they last for a while. Good Luck!
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