Thermoplat-acting as a fertilizer disks consist of pressed acting as a fertilizer disks which are stuck on to polystyrene. The disks provide the aquarium plants with nutrients over a very long time period (3 to 5 years). The aquarium which in addition positively influences the plant growth gets warmth isolated to below simultaneously. The Thermoplat-acting as a fertilizer disks can and without underfloor central heating be used into aquaria. Measures: 97 x97 mm, thickness approx. 19 mmDo you have questions about this article ?