does this need batteries?

No... its a thin piece of plastic with some kind of reacting Paint in the circular pattern & a sucker that attaches it to the inside of your tank glass. sounds flimsy but they last for ages.

How long does this last ?

Official manufacturer information: At least one year! Just google the product name and you will find it, Amazon doesn't allow links here.Let us know if we can help with any other information!All the bestCarsten from STATTRAND

Can this be used in a fresh water / tropical tank or is it salt water only like most of seacham's products?

This is for both fresh water and salt water.

Do you remove all the plastic wrap , mine stayed on the centre disc

The centre disk needs to be exposed to the water. It should not be covered

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Seachem Ammonia Alert for Freshwater and Marine Fish

Product ID: 48415451

Details

Brand
Seachem
Item form
Alder cones
Item weight
0.01 Grams
Liquid volume
1 Kilograms
Unit count
1 count

⏳Continuous real-time monitoring

🌊Works in fresh & marine tanks

🟡Instant ammonia detection

R585

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Description

🟡 Stay ahead of ammonia spikes—because your fish deserve the best!

TRUSTED BY EXPERTS - Backed by Seachem’s reliable sensor technology and thousands of positive reviews.
CONTINUOUS MONITORING - Provides 24/7 real-time ammonia level tracking without any hassle.
INSTANT AMMONIA ALERTS - Color-changing sensor reacts quickly to ammonia spikes, giving you peace of mind.
COMPACT LOW MAINTENANCE - Tiny, lightweight design fits seamlessly inside your tank for constant vigilance.
DUAL ENVIRONMENT COMPATIBILITY - Perfectly designed for both freshwater and marine aquariums, ensuring versatile use.

Seachem Ammonia Alert is a compact, color-changing sensor that continuously monitors ammonia levels in both freshwater and marine aquariums. Trusted by aquarists worldwide, it provides instant visual warnings of harmful ammonia spikes, helping maintain a safe environment for your fish with minimal effort.

Specifications

ASIN	B000255R5G
Allergen Information	Yam Free
Brand Name	Seachem
Country Of Origin	USA
Customer Reviews	4.2 4.2 out of 5 stars (3,329)
Global Trade Identification Number	00000116001007
Included Components	Ammonia Alert
Item Form	Alder cones, Barley straw, Chemical release, Natural materials
Item Type Name	Seachem Ammonia Alert
Item Weight	0.01 Grams
Liquid Volume	1 Kilograms
Manufacturer	Seachem
Manufacturer Part Number	10
Model Number	10
Number of Items	1
Pet Type	Fish
Product Warranty	1
Target Species	Fish
UPC	798256226922 617407622898 000116001007 707005108594
Unit Count	1 count

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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R585

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

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

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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