IllustrationWater care · Water conditioner
Seachem Prime 250 ml, taken apart
A concentrated conditioner for chlorine and chloramine. Measure the new water and follow the full label directions.
250ml
Bottle
5ml
Standard measure
200L
New water per 5 ml
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Taken apart
Every part
The verdict
Works / doesn't
What works
- Manufacturer directions permit adding Prime to new water first and prefer this to adding it directly to the tank.
What doesn't
- The full directions vary with conditions; the standard dose should not be treated as the whole instruction sheet.
Care
- Measure the actual volume of new water.
- Standard directions: 5 ml per 200 L of new water; read all label conditions.
- If adding directly to the tank, base dose on aquarium volume (manufacturer).
Specs
The numbers
| Size | 250 ml |
|---|---|
| For | Freshwater and saltwater |
| Basic function | Removes chlorine and chloramine (manufacturer) |
| Standard dose | 5 ml per 200 L of new water |
| Direct addition | Base the dose on aquarium volume (manufacturer) |
Sources
Where this comes from
From our TikTok post “Tap water vs your fish: what Seachem Prime actually does”. How we review.