At Modern Aquarium, we strive to provide you access to the premium brands you already know and trust. So shop with us for liquid fertilizer for aquarium plants from Microbe-Lift, API, Seachem, Thrive +, and more. From all-in-one fertilizers to iron boosters and potassium supplements, we have it all.
Before adding a product to your cart, please read the product descriptions to ensure the fertilizer is the right one for your aquarium environment. Some fertilizers are better for planted tanks with fish or shrimp, while others are for plants only.
Explore Our Selection
In addition to liquid fertilizer for aquarium plants, we also carry tab fertilizers. Even better, we have a massive selection of water care and maintenance kits and supplements to help you create the best possible environment for whatever plants you have in your tank.
Your aquarium is important to us, and we’re always happy to help it thrive. If you have any questions concerning our liquid fertilizers or any of our other products, we have answers. Check out our FAQ for common concerns, or reach out to us via phone at (917) 231-5956 for more personalized guidance.