---
product_id: 5788177
title: "Safe, 250 g / 8.8 oz"
brand: "seachem"
price: "HK$250"
currency: HKD
in_stock: true
reviews_count: 13
category: "Seachem"
url: https://www.desertcart.hk/products/5788177-safe-250-g-8-8-oz
store_origin: HK
region: Hong Kong
---

# Neutral pH, non-acidic Highly concentrated dry formula Converts ammonia to non-toxic form Safe, 250 g / 8.8 oz

**Brand:** seachem
**Price:** HK$250
**Availability:** ✅ In Stock

## Summary

> ♻️ Keep your aquatic ecosystem thriving with the concentrated power of Safe™!

## Quick Answers

- **What is this?** Safe, 250 g / 8.8 oz by seachem
- **How much does it cost?** HK$250 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/5788177-safe-250-g-8-8-oz)

## Best For

- seachem enthusiasts

## Why This Product

- Trusted seachem brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Versatile Use:** Perfect for fresh & saltwater tanks, ideal during cycling and routine water changes
- • **Biofilter Booster:** Transforms harmful ammonia into safe compounds, enhancing natural filtration
- • **pH-Stable Formula:** Non-acidic and won’t disrupt your tank’s delicate balance or overactivate skimmers
- • **Concentrated Power:** Dry formula packs more punch than liquid alternatives, saving you money and space
- • **Ultimate Water Detox:** Removes chlorine, chloramine & ammonia for pristine tank health

## Overview

Seachem Safe™ is a premium, highly concentrated dry conditioner designed for both fresh and saltwater aquariums. It effectively removes chlorine, chloramine, and ammonia by converting toxic ammonia into a safe, biofilter-friendly form without altering pH or overactivating skimmers. Ideal for tank cycling and regular water changes, Safe™ offers long-lasting value and superior water detoxification to maintain a healthy aquatic environment.

## Description

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.

Review: Great Product for Removing Chlorine From Your Aquarium - I was originally using Seachem Prime to treat my aquarium water and then reading some forums I discovered Safe and decided to do some research on this. It's essentially the same product as Prime just in dry powdered form and more concentrated so you save money in the long run. This product should last me years even with weekly water changes. I have a 30 gallon tank so whenever I do a water change I usually siphon out about 15% of my water. I then put the dose of Safe into my tank as my bucket isn't very large. If you are changing water in a larger tank, you can also treat each individual bucket as you want but I find it easier to just dose the entire tank and then start adding in the new water after making sure it is the same temperature as the water in my tank. This is especially true if you are using a siphon that hooks up to your sink or hose for quick water changes. I follow the instructions from Seachem's website: Directions for all other sizes (this is different if you buy the 50g or 100g sizes!) 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. Since my tank is only 30 gallons I use (1/10) of that dose to treat the entire tank. That ends up being 1/40 of a teaspoon so I had to buy some smaller measuring spoons. I use 1/32 of a teaspoon and have seen no ill effects with using this slightly higher dose as you would be using more for ammonia anyways. I've been using Prime for years and now been using Safe for over a month and have had no issues with my fish and chlorine and they seem very happy and healthy. You can also double or triple this dose in an emergency if you and need to quickly detoxify nitrites and nitrates.
Review: Great value, must buy if you're not using RODI water - Works well, lasts a very a long time, and it's a great value. Like other dechlorinators, it's sulfur based so it smells awful, especially so because it's the concentrated powder. BUT It's really good at what it does for much cheaper than any other product. It took me 2.5 years to get through one bottle.

## Features

- The complete and concentrated conditioner for both fresh and salt water
- Removes chlorine Chloramine and ammonia
- Converts ammonia into a safe nontoxic form that is readily removed by the tank's Bio Filter
- May be used during Tank cycling to alleviate ammonia and nitrite toxicity; non acidic and will not impact pH nor will it over activate skimmers
- Safe is the dry version of prime and shares all of its advantages, however safe is even more concentrated

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0002A5WOC |
| ASIN  | B0002A5WOC |
| Age Range Description | all stages |
| Best Sellers Rank | #13,960 in Pet Supplies ( See Top 100 in Pet Supplies ) #119 in Aquarium Water Treatments |
| Brand Name | Seachem |
| Color | white |
| Customer Reviews | 4.7 4.7 out of 5 stars (3,924) |
| Date First Available | January 1, 2011 |
| Date First Available  | January 1, 2011 |
| Directions | Use 200 mg Safe (scoop) per each 200 L (50 gallons) as needed to reduce chlorine and chloramine or per 50 L (13 gallons) for ammonia. |
| Included Components | all |
| Is Discontinued By Manufacturer  | No |
| Item Dimensions LxWxH | 2.44 x 2.44 x 4.81 inches |
| Item Package Dimensions L x W x H | 4.88 x 2.24 x 2.2 inches |
| Item Weight | 10.4 ounces |
| Item model number | 386 |
| Item model number  | 386 |
| Manufacturer | Seachem Laboratories, Inc. |
| Manufacturer  | Seachem Laboratories, Inc. |
| Model Name | Seachem Safe 250g |
| Number of Items | 1 |
| Product Dimensions  | 2.44 x 2.44 x 4.81 inches; 10.4 ounces |
| Size | 250g/ 8.8 oz |
| Specific Uses for Product | Active |
| Target Audience Keyword | fish |

## Product Details

- **Brand:** Seachem
- **Item Form:** Powder
- **Item Weight:** 10.4 ounces
- **Liquid Volume:** 240000 Liters
- **Manufacturer:** Seachem Laboratories, Inc.

## Images

![Safe, 250 g / 8.8 oz - Image 1](https://m.media-amazon.com/images/I/71xaRZq8COL.jpg)

## Questions & Answers

**Q: 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?**
A: 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.

**Q: 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**
A: 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 :).

**Q: What is the difference between safe & prime? i currently use prime but am interested in safe for my larger aquarium i just set up**
A: Safe is basically the powdered form of prime, that's what we use in our shop ( we have over 600 aquariums)

**Q: Can i recharge purigen with safe?**
A: 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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great Product for Removing Chlorine From Your Aquarium
*by N***N on September 30, 2014*

I was originally using Seachem Prime to treat my aquarium water and then reading some forums I discovered Safe and decided to do some research on this. It's essentially the same product as Prime just in dry powdered form and more concentrated so you save money in the long run. This product should last me years even with weekly water changes. I have a 30 gallon tank so whenever I do a water change I usually siphon out about 15% of my water. I then put the dose of Safe into my tank as my bucket isn't very large. If you are changing water in a larger tank, you can also treat each individual bucket as you want but I find it easier to just dose the entire tank and then start adding in the new water after making sure it is the same temperature as the water in my tank. This is especially true if you are using a siphon that hooks up to your sink or hose for quick water changes. I follow the instructions from Seachem's website: Directions for all other sizes (this is different if you buy the 50g or 100g sizes!) 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. Since my tank is only 30 gallons I use (1/10) of that dose to treat the entire tank. That ends up being 1/40 of a teaspoon so I had to buy some smaller measuring spoons. I use 1/32 of a teaspoon and have seen no ill effects with using this slightly higher dose as you would be using more for ammonia anyways. I've been using Prime for years and now been using Safe for over a month and have had no issues with my fish and chlorine and they seem very happy and healthy. You can also double or triple this dose in an emergency if you and need to quickly detoxify nitrites and nitrates.

### ⭐⭐⭐⭐⭐ Great value, must buy if you're not using RODI water
*by A***A on October 13, 2025*

Works well, lasts a very a long time, and it's a great value. Like other dechlorinators, it's sulfur based so it smells awful, especially so because it's the concentrated powder. BUT It's really good at what it does for much cheaper than any other product. It took me 2.5 years to get through one bottle.

### ⭐⭐⭐⭐⭐ Best aquarium products for multiple tanks!
*by C***N on November 7, 2025*

Sneaky this is the best amazing products for people with multiple tank syndrome. Make water in mass and so much cheaper than prime. There’s no way I could afford prime for 15 tanks.

## Frequently Bought Together

- Safe, 250 g / 8.8 oz
- Seachem Stability Fish Tank Stabilizer - For Freshwater and Marine Aquariums, 16.9 Fl Oz (Pack of 1)
- Seachem StressGuard Slime Coat Protection - Stress and Toxic Ammonia Reducer 500 ml

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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-03-07*