Seachem Safe 250g

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  • Model: 020025
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Safe™ is the complete and concentrated dry conditioner for both fresh and salt water. Safe™ removes chlorine, chloramine and ammonia. Safe™ converts ammonia into a safe, non-toxic form that is readily removed by the tank’s biofilter. Safe™ may be used during tank cycling to alleviate ammonia/nitrite toxicity. Safe™ detoxifies nitrite and nitrate, allowing the biofilter to more efficiently remove them. Safe™ is non-acidic and will not impact pH. Safe™ will not overactivate skimmers. Use at start-up and whenever adding or replacing water.

Why It's Different

Safe™ is the dry version of Prime® and shares all of it’s advantages; however, Safe™ is even more concentrated than Prime®.


To remove…

Chlorine: use 1 measure to each 60 L (15 gallons*) of tap water (removes 1 ppm).

Chloramine: use 1 measure to each 75 L (20 gallons*) of tap water (removes 1 ppm).

Ammonia: use 1 measure to each 11 L (3 gallons*) of tap water (removes 1 ppm). Do not overdose!

For reference, 1 measure = 100 mg. To detoxify nitrite/nitrate in an emergency situation use up to 5 measures to each 40 L (10 gallons). Use fish to gauge toxicity reduction as test kits will still show presence of nitrite/nitrate even when detoxified. May be added to aquarium directly, but is better if added to new water first. If adding directly to aquarium, base dose on aquarium volume. If temperature is > 30 C (86 F) cut dosing in half.

by Kevin Berry on 21/1/2015

This is a great economical water conditioner. It is also good to keep a bottle at hand in case of an emergency for detoxing ammonia nitrites and nitrates.

by Kevin Berry on 5/1/2015

Great cost effective product for water conditioning Handy to have in for emergency use I would have lost all my fish due to cycle crashing if I hadn't had any seachem safe to hand. Excellent service from Aquaessentials

Ask a question about this product
could you tell me how much of this product I need to dose 85 imperial gallons please. And dose this size come with a measure. Thanks.


Very little. More arrives with us on Wednesday so I can't tell you exact. You measure by teaspoon I believe.

I look forward to your response!


Use 1.25 g (1/4 tsp.) for every 1,250 L (300 gallons) as needed to reduce chlorine and chloramine or use 1.25 g (1/4 tsp.) for every 300 L (75 gallons) for ammonia.

Is this protozoan safe?


do you mean will it effect the filter?

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