Seachem Flourish Potassium - 250ml
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Product Information
Full details
Seachem Flourish Potassium is an essential liquid supplement for aquarium hobbyists maintaining high-growth, natural planted tanks. It provides a concentrated source of potassium that allows users to address nutrient deficiencies without inadvertently adding nitrogen or phosphorus, ensuring precise control over your water chemistry. While it is highly effective at boosting plant health and reversing symptoms of chlorosis, users should be careful to dose according to specific tank needs to prevent over-supplementation.
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| Brand | Seachem |
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Extended Product Information
FAQs
Does this product add nitrogen or phosphorus to my tank?
No, Flourish Potassium is derived from potassium sulfate, specifically to avoid adding nitrogen or phosphorus.
How often should I use this supplement?
You can repeat the dose 2–3 times per week or as needed based on observing signs of deficiency in your older leaves.
What are the physical signs of potassium deficiency?
Common signs include chlorosis (yellowing), necrosis (browning/death of tissue), pinholes in leaves, and weak stems and roots.
Will this harm my fish or invertebrates?
When used according to the label directions, it is safe for typical aquarium livestock.
Can I use this in a low-tech tank?
Yes, but be aware that low-tech tanks often have slower growth rates, so you may need a smaller or less frequent dosage than the manufacturer recommends.
Troubleshooting
Plants are still showing signs of yellowing after consistent dosing
Ensure that nitrogen and phosphorus levels are also within target ranges, as a deficiency in those elements can also cause yellowing.
Difficulty measuring small doses for tanks smaller than 125L
Use a graduated syringe or measuring pipette to ensure accuracy for smaller volumes rather than relying solely on the cap.
Pros and Cons
Pros
- Allows for independent adjustment of potassium levels
- Does not contribute to nitrogen or phosphorus spikes
- Highly concentrated for long-term value
- Effectively treats leaf yellowing and necrosis
Cons
- Requires regular water testing to gauge dosing needs
- Overdosing can potentially cause mineral imbalances
- Must be used in conjunction with other macros for complete plant health
Setup, Compatibility & Care
For optimal results, add the recommended dose of 5ml per 125L of aquarium water. Because this is a concentrated mineral supplement, store the bottle in a cool, dark place away from direct sunlight to maintain the integrity of the solution. Ensure you keep the cap tightly sealed to prevent evaporation or contamination. This product is compatible with most standard freshwater planted aquarium setups and can be used alongside other Flourish line products, provided you are monitoring your overall NPK ratios carefully.