Aquatic plants need nitrogen, phosphorus, potassium, iron and micronutrients, and a usable carbon source to grow well — and fish waste alone rarely supplies all of it in balance. Rather than one all-in-one bottle, Dymax splits plant nutrition into individual macro- and micronutrient dosing products, which is exactly how the Estimative Index (EI) dosing method planted-tank hobbyists favor is meant to work: dose each nutrient separately so you can adjust to what your specific tank needs.
Why Dose Nutrients Individually?
Every planted tank runs a different balance of light, CO2, fish load, and plant mass, so a fixed all-in-one blend often over- or under-supplies one nutrient while getting another right. Dosing macronutrients (nitrogen, phosphorus, potassium) and micronutrients (iron and trace elements) separately lets you correct deficiencies — like the pale new growth of an iron shortage, or the stunted growth of a phosphorus shortfall — without disturbing the rest of the balance.
The Dymax Plant Nutrition Line
- Nitrogen Plus — supplies nitrate, the macronutrient planted tanks most often run short on when fish load is light relative to plant mass.
- Phosphorus Plus — one of the three core macronutrients alongside nitrogen and potassium; easy to run short on in low-fish-load tanks.
- Potassium Plus — drives cell function throughout aquatic plants but isn't replenished by fish waste the way nitrogen and phosphorus are.
- Flora Plus — a steady supply of iron and micronutrients that keep new growth green rather than pale or yellowing.
- Carbon D Plus — a liquid carbon source for tanks not running pressurized CO2 injection, giving plants a usable carbon supply for photosynthesis.
How to Dose
- Start with label-recommended doses and observe growth over 1–2 weeks before adjusting.
- Watch plant symptoms — pale new leaves point to iron/micronutrient shortage, stunted growth to macronutrient shortage, and algae blooms can indicate an imbalance rather than an excess of any single nutrient.
- Dose consistently on a set schedule (commonly 2–3 times weekly) rather than sporadically, since plants respond best to steady nutrient availability.
- Pair with a nitrogen source in low-fish-load or shrimp-focused tanks, since these setups often need supplemental nitrogen that heavier fish stocking would otherwise provide.
The full Dymax Plant Nutrition line is available at Marine Concept Supply in 300ml and 500ml sizes — order online or pick up at our shop in Wheeling, IL. Shop Nitrogen Plus, Phosphorus Plus, Potassium Plus, Flora Plus, and Carbon D Plus, or browse more aquascaping supplies.
