Prime water conditioner is one of the best products for stretching your dollar. It is very concentrated much more so than other conditioners but lacks things like buffers and stress coats.

Use 1 capful (5 mL) for each 200 L (50 US gallons) of new water. For smaller volumes, please note each cap thread is approximately 1 mL. May be added to aquarium directly, but better if added to new water first. If adding directly to aquarium, base dose on aquarium volume. Sulfur odor is normal. For exceptionally high chloramine concentrations, a double dose may be used safely. To detoxify nitrite in an emergency, up to 5 times normal dose may be used. If temperature is > 30 °C (86 °F) and chlorine or ammonia levels are low, use a half dose.

Seachem Prime Water Conditioner

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Prime water conditioner is one of the best products for stretching your dollar. It is very concentrated much more so than other conditioners but lacks things like buffers and stress coats.

Use 1 capful (5 mL) for each 200 L (50 US gallons) of new water. For smaller volumes, please note each cap thread is approximately 1 mL. May be added to aquarium directly, but better if added to new water first. If adding directly to aquarium, base dose on aquarium volume. Sulfur odor is normal. For exceptionally high chloramine concentrations, a double dose may be used safely. To detoxify nitrite in an emergency, up to 5 times normal dose may be used. If temperature is > 30 °C (86 °F) and chlorine or ammonia levels are low, use a half dose.

Customer Reviews

Based on 35 reviews
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(34)
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P
P.H.
Staple

I always keep this on hand for adding new water. Since it is concentrated it doesn't take much to do the job, the bottle will last a long time. I use a pipette to dose the minimum effective amount since I learned from Cory that it takes some oxygen out of the water as it works on the chlorine. Using minimal effective dose means minimal oxygen loss, while also being more economical.

K
K.R.

Very good product! Quick delivery!

J
J.T.
Great product

I use this every week during water changes.