Flo Gro FG500 The Flo-Gro is a super-oxygenated pot with a timer. It's renowned for producing huge yields. The pot is filled with clay pebbles and nutrient solution is pumped from the reservoir and over the plants through a dripper ring as per the timer settings. Ideal for maximising growth and yields from large plants and cultivating plants for cuttings. The use of a timer means that longer and more frequent feeds can be delivered to plants as they mature.