BioMarine® will help you improve the soil integrity of your greenhouse or garden. Brought to you by a leading competitor, General Hydroponics, this fertilizer is derived from cold processed enzymatically digested fish and adds essential proteins, oils and nutrients into the soil. Plants are rejuvenated by this microbiology and experience rapid growth, improved color and resistance to pests. BioMarine® benefits all types of plants during all phases of growth, from seedling to harvest. It can be used as a standalone fertilizer or with other fertilizers. BioMarine makes a great overall fertilizer for horticultural professionals or garden hobbyists. Quantity: 2.5 Gallon.