Zipgrow™ towers are specially designed for high density hydroponic farming. the technology works equally well in aquaponic systems. designed for maximum light use efficiency, space use efficiency, and outfitted with high bsa media, these white, one-sided towers allow growers to stack towers in tight configurations.. This tower is hung by a removable hanger and features our zipgrowtm housing design and removable, reusable zipgrow matrix mediatm. this tower is simple to use and display and is perfect for high density vertical production of aquaponic or hydroponic strawberries, greens and herbs. 5′ hanging zipgrowtm tower $89.95 sale $75.95 part: zgs-t5h. This tower is hung by a removable hanger and includes our zipgrow™ housing design and removable, reusable zipgrow™ matrix media. this tower is simple to use and display and is perfect for high-density vertical production of aquaponic or hydroponic strawberries, greens, and herbs..