Collection: Plant Fertilizer & Additives

Fertilizers and supplements for planted freshwater tanks, currently built around the Seachem Flourish line: the comprehensive supplement plus individual iron, nitrogen, potassium, phosphorus and trace bottles, along with Flourish Excel as a carbon source.

Dosing sensibly

Light drives demand. A tank under low light needs far less than a high-light setup, and overdosing into low light tends to feed algae rather than plants. The second variable is what your water and substrate already supply, since an active soil provides a great deal early on while inert gravel provides nothing. Comprehensive supplements suit most tanks, and individual bottles are for correcting a deficiency you have actually identified.

These are usually bought with root tabs, substrate and a test kit.

Testing before dosing? Start at WaterCare.