Laguna Once-A-Year Mini Fertilizer Spike Aquatic Plant Fertilizer, 6 Count

The Laguna Once-A-Year Mini Fertilizer Spike Aquatic Plant Fertilizer is a simple, easy way to support the health of your aquatic plants. The spikes deliver nutrition to your plants for up to a year, making for hands-off care. The sticks are temperature-activated, and they release nutrients only when temperatures are at or above 50 degrees Fahrenheit, so plants get the nutrients when they need them most. Once the spikes are activated, they slowly release a well-balanced formula to maximize your plants’ color and size. The fertilizer is non-toxic to fish and plants and won’t negatively affect your water.