---
product_id: 6991006
title: "Seachem Ph Alert for Freshwater"
brand: "seachem"
price: "$644"
currency: MXN
in_stock: true
reviews_count: 8
url: https://www.desertcart.mx/products/6991006-seachem-ph-alert-for-freshwater
store_origin: MX
region: Mexico
---

# 3-6 months continuous monitoring Color-changing pH sensor (5.4-8.0 range) Compact 1.5" x 2.5" size Seachem Ph Alert for Freshwater

**Brand:** seachem
**Price:** $644
**Availability:** ✅ In Stock

## Summary

> 🌊 Stay ahead of pH shifts—your aquarium’s silent, stylish watchdog!

## Quick Answers

- **What is this?** Seachem Ph Alert for Freshwater by seachem
- **How much does it cost?** $644 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.mx](https://www.desertcart.mx/products/6991006-seachem-ph-alert-for-freshwater)

## 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

- • **Instant Visual Alerts:** Color shifts instantly notify you of pH changes between 5.4 and 8.0.
- • **Effortless pH Vigilance:** No test strips or water sampling needed—just place and monitor.
- • **Long-Lasting Reliability:** Up to 4x longer lifespan than competitors keeps your aquarium safe longer.
- • **Discreet Aquarium Guardian:** Small, clear design blends seamlessly without disrupting your aquatic aesthetic.
- • **Freshwater Focused Precision:** Specifically engineered for freshwater tanks to maintain optimal fish health.

## Overview

Seachem Ph Alert is a compact, color-changing sensor designed for continuous pH monitoring in freshwater aquariums. It provides instant visual alerts for pH changes between 5.4 and 8.0 without the need for test strips or water sampling. Lasting 3 to 6 months—up to four times longer than competitors—this unobtrusive device ensures hassle-free, reliable water quality management.

## Description

SeachemPh Alert for Freshwater

## Features

- Lasts 3-6 months
- Small and unobtrusive
- No water sampling
- No Chemicals

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Item Weight | 0.3 Ounces |
| Allergen Information | Allergen-Free |
| Target Species | Fish |

## Product Details

- **Brand:** Seachem
- **Liquid Volume:** 1 Kilograms
- **Item Weight:** 0.3 Ounces
- **Item Form:** Device
- **Manufacturer:** Seachem Laboratories, Inc.

## Images

![Seachem Ph Alert for Freshwater - Image 1](https://m.media-amazon.com/images/I/51b8WFixnwL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Accurate to a point, easy to install, transparent housing.
*by S***C on May 4, 2024*

This Ph monitor began working within 30m just as advertised. It's also congruent with my test strips, so I would trust it's accuracy, although it's no replacment for a master test kit with additives. Would buy again!

### ⭐⭐⭐⭐⭐ Is accurate and works quickly
*by J***S on June 2, 2023*

I use this with an api test for ph and when adding ph within 5 minute the ph alert changes colors and matches exactly with perhaps a slight difference of at least .5 if at all but I trust Seachem products all the way as someone with every test kit and cares deeply about the quality of my aquarium.

### ⭐ Inaccurate readings after a week or so in 55 gallon tank
*by M***A on July 6, 2025*

First reading spot on, but after some time (within next week or so) readings are very inaccurate - either way too low or way too high when compared to other measurements methods ( API master kit or pH paper). Most likely my first and last purchase. I’m not sure if this has anything to do it, but my tank is 55 gallons and has some agitation from air stones and filter.

## Frequently Bought Together

- Seachem Ph Alert for Freshwater
- Seachem Ammonia Alert

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**Shop now:** [https://www.desertcart.mx/products/6991006-seachem-ph-alert-for-freshwater](https://www.desertcart.mx/products/6991006-seachem-ph-alert-for-freshwater)

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*Product available on Desertcart Mexico*
*Store origin: MX*
*Last updated: 2026-02-07*