Free Pond Treatment Calculator - Salt & Chemical Dosage | Pond Calculator
Free pond treatment dosage calculator. Calculate salt, potassium permanganate, and methylene blue dosages for your pond volume.
How to Use the Treatment Dosage Calculator
Select pond volume and treatment type to calculate dosage. Supports salt (0.3%), potassium permanganate, and methylene blue.
Add salt gradually over 3 days. Sudden concentration changes stress fish. Salt formula: dosage (lbs) ≈ gallons × 0.011 (i.e. 11 lbs per 1,000 gallons for the 0.3% Koi industry standard).
Always remove activated carbon from your filter before adding medications. Carbon absorbs chemicals and reduces treatment effectiveness.
FAQ
What is the correct salt dosage for a koi pond?
For general health maintenance: 0.1% salt (about 0.37 lbs per 100 gallons — i.e. 3.7 lbs per 1,000 gallons). For disease treatment: 0.3% salt (about 1.1 lbs per 100 gallons — i.e. 11 lbs per 1,000 gallons, Koi industry standard). Add salt gradually over 3 days. Do not stay at 0.3% longer than 14 days, and never exceed 0.5% as it can harm plants and some fish species.
Does pond salt harm aquatic plants?
Yes, salt above 0.1% can damage or kill most aquatic plants. If you have water lilies, lotus, or other plants, keep salt below 0.1% or remove plants before treatment. Salt is safest in fish-only ponds.
When should I use potassium permanganate (KMnO4) in my pond?
KMnO4 is used to treat parasites (flukes, anchor worms), bacterial infections, and to disinfect new fish. Apply at 2 ppm (2mg/L) and maintain pink color for 4+ hours. Remove activated carbon from filter before treatment.
How do I know if my pond treatment is working?
Improvement should be visible within 3–7 days. Fish should become more active, stop flashing (rubbing against surfaces), and show improved appetite. Test water parameters daily during treatment. If no improvement after 7 days, consult a fish veterinarian.
Is it safe to use multiple treatments simultaneously?
Generally no. Combining treatments can be toxic to fish. Complete one treatment course before starting another. Always remove activated carbon from your filter before any chemical treatment, as carbon absorbs medications.