A little less guesswork.
Seachem Clarity calculator
Clarity water clarifier — not a bacterial starter
Read the product guide and worked examples ↓
Clear amounts. Visible assumptions.
Your calculation, explained
Choose a product and enter the water you’re actually dosing.
- Check the exact product and formulation.
- Use measured water, or make an explicit estimate.
- Review the amount, source and any schedule.
Product guide · edited 28 October 2026
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What does the Clarity amount do?
The reference is 5 mL per 80 L. Clarity aggregates suspended particles so mechanical filtration can capture them; adequate filter floss or equivalent fine media is part of the process.
Worked examples
These illustrations use 100 L of measured water, without a decor deduction. Choose the matching stage or formulation above for your own water volume. They do not select a treatment or establish livestock suitability.
As needed; reassess before repeating
| Stage | Amount or action for 100 L |
|---|---|
| As needed; reassess before repeating | 6.25 mL |
Example only. Your calculation above uses your own inputs. Small amounts and powder fractions still need equipment that can measure them reliably.
Before you measure
Water can look cloudier initially. Clean the mechanical media after clearing and check filtration if clouding persists. Do not treat repeated additions as a substitute for identifying a water-quality problem.
Product-specific checks from the calculation record
- Mechanical filtration such as filter floss is necessary. Water may initially look cloudier; clean the mechanical media after clearing.
- The manufacturer permits repeat use after 24 hours if needed, but persistent clouding warrants checking the filtration.
Can I repeat immediately if it still looks cloudy?
Seachem describes repeat use after 24 hours as needed, and warns that persistent clouding may mean inadequate mechanical filtration.
Sources and next steps
Seachem manufacturer directions →
Manufacturer page consulted 28 October 2026. Match the exact bottle and leaflet; editorial review does not establish diagnosis or compatibility.
Optional buying links
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Seachem Clarity, 500 mL
View on Amazon US (affiliate link) — Seachem Clarity, 500 mL; opens in a new tabCheck the selected bottle, formulation and label before buying. These links do not select a treatment or change your dose. Prices, sellers and availability are shown on Amazon. About these links.