So if i have an empty 500ml bottle of prime laying around how much safe do i need to add in order for it to be the same as if i were to buy prime?

I make mine in an empty plastic gallon container because more dilute is easier. Prime dosage is 1mL per 10g. You're wanting a total of 500mL to treat 5000g. For Safe, 1/4 of a teaspoon treats 300g. And, just to note, there are 3 teaspoons in a tablespoon. 5000/300=16.667 ||| .25tsp X 16.667 = 4.167 ||| 4.167/3=1.389So, 4.167 teaspoons in the 500mL bottle. Or for simplicity, 1.389 tablespoons. You could probably do 1 tablespoon and another 1/3 tablespoon aka a teaspoon.I've never made Safe so concentrated, you may need to use slightly warmed water to make sure everything gets saturated. Also always shake before you use it.

if 5gr of safe treats 100gal then 250gr treats 5000gal, and 5ml of prime treats 50gal then 500ml treat 5000gal as well and its the same price

1 gram of Safe treats of 200 gallons, 1 ml of Prime 10 gallons. 250 grams of Safe treats of 50,000 gallons, 500 ml of Prime 5,000 gallons. Thus, you get more for your money :).

What is the difference between safe & prime? i currently use prime but am interested in safe for my larger aquarium i just set up

Safe is basically the powdered form of prime, that's what we use in our shop ( we have over 600 aquariums)

Can i recharge purigen with safe?

Yes Please read: http://www.seachem.com/support/forums/forum/general-discussion/1771-is-safe-safe-for-purigen-re-charge strait from the Seachem support

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Safe 250gm

Product ID: 266775677

Details

Brand
Seachem
Item form
Powder
Item weight
295 g
Liquid volume
240000 Liters
Number of Packs
1

⚡Highly concentrated formula for fast action

🌿Detoxifies nitrite & nitrate for safe aquatic life

🧪Neutralizes chlorine, chloramine & ammonia

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Description

💧 Transform your tank into a crystal-clear aquatic haven!

TRUSTED BY THOUSANDS - With a 4.7-star rating from over 3,400 users, it’s the go-to choice for professional and hobbyist aquarists alike.
ULTIMATE WATER DETOX - Eliminates harmful chlorine, chloramine, and ammonia instantly to protect your aquatic ecosystem.
SAFE FOR ALL AQUATIC LIFE - Formulated to be gentle yet effective, supporting the wellbeing of your entire aquatic community.
POWER PACKED CONCENTRATION - Small dose, big impact—highly concentrated to treat large volumes efficiently and economically.
BALANCED AQUARIUM CHEMISTRY - Detoxifies nitrite and nitrate, ensuring a stable and healthy environment for all fish life stages.

Seachem Safe 250gm is a highly concentrated aquarium water conditioner that instantly neutralizes chlorine, chloramine, and ammonia while detoxifying nitrite and nitrate. Designed for all life stages of fish, it ensures a safe, balanced, and healthy aquatic environment. Trusted by thousands with a 4.7-star rating, it’s the essential solution for maintaining pristine water quality in freshwater tanks.

Specifications

ASIN	B0002A5WOC
Allergen Information	Abalone Free
Brand Name	Seachem
Country of Publication	USA
Customer Reviews	4.7 4.7 out of 5 stars (3,480)
Global Trade Identification Number	00000116038607
Included Components	all
Item Form	Powder
Item Type Name	Safe, 250 g / 8.8 oz
Item Weight	295 g
Liquid Volume	240000 Liters
Manufacturer	Seachem
Manufacturer Part Number	386
Model Number	386
Pet Type	Fish
Target Species	Fish
UPC	000116038607 000116068307
Unit Count	250 Grams

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€ 41.33

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Desertcart purchases this item on your behalf and handles shipping, customs, and support to Austria.

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