PLANT FOOD (ADD TO ANY ORDER >£10 P&P= £2.75 ( 1 BAG LASTS UP TO 3 MONTHS) This product does not alter pH by more than 0.3, up hardness or affect fish in any way, it is in a self contained black net bag which should not be opened. Just place in corner of aquarium or filter and leave the product to feed your plants on auto-pilot for up to 3 months in situ. No other Fertilizer for the price has the staying power or gives the spectacular results provided the correct lighting and filtration are provided
