General Hydroponics FloraKleen, 6 GallonFloraKleen Mineral Salt Clearing Solution removes fertilizer residue that can accumulate over time in hydroponic systems, growing media, and potting soils. Use FloraKleen monthly to purge your hydroponic system or potted plants of excess salts that can accumulate as a result of regular fertilizer application. FloraKleen can be used at any time during the plant's life to dissolve mineral and salt buildup. FloraKleen also works as an excellent final