---
product_id: 53908540
title: "ATM Blue Shark (Formerly Colony Marine Rapid Cycle 25 gal Tank Cycle 8 oz"
brand: "atm"
price: "₱3449"
currency: PHP
in_stock: true
url: https://www.desertcart.ph/products/53908540-atm-blue-shark-formerly-colony-marine-rapid-cycle-25-gal
store_origin: PH
region: Philippines
---

# 25 gal tank cycle Instant fish addition True nitrifying bacteria ATM Blue Shark (Formerly Colony Marine Rapid Cycle 25 gal Tank Cycle 8 oz

**Brand:** atm
**Price:** ₱3449
**Availability:** ✅ In Stock

## Summary

> 🌊 Dive into Instant Aquatic Bliss!

## Quick Answers

- **What is this?** ATM Blue Shark (Formerly Colony Marine Rapid Cycle 25 gal Tank Cycle 8 oz by atm
- **How much does it cost?** ₱3449 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ph](https://www.desertcart.ph/products/53908540-atm-blue-shark-formerly-colony-marine-rapid-cycle-25-gal)

## Best For

- atm enthusiasts

## Why This Product

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

## Key Features

- • **Compact & Convenient:** Lightweight 8 oz liquid form fits seamlessly into your aquarium routine.
- • **All Life Stages Welcome:** Perfect for every aquatic resident, from fry to full-grown fish.
- • **Proven by Professionals:** Trusted by commercial aquariums for reliable results.
- • **Cycle Your Tank in a Day!:** Say goodbye to weeks of waiting—add fish the same day!
- • **Authentic Bacteria Strains:** Contains Nitrococcus & Nitrosococcus for optimal ammonia and nitrite consumption.

## Overview

The ATMBlue Shark is an 8 oz liquid solution designed for rapid cycling of 25-gallon marine tanks. It features authentic nitrifying bacteria strains, allowing for immediate fish addition and is trusted by commercial aquariums for its effectiveness.

## Description

ATM Blue Shark (Formerly Colony Marine Rapid Cycle 25 gal Tank Cycle 8 oz

## Features

- CYCLES: The one that works, effectively imports actual true nitrifying bacteria
- AUTHENTIC: Other products don't contain the right species of bacteria, Colony Freshwater does!
- STRAINS: Nitrococcus & Nitrosococcus for primary ammonia and nitrite consumption in the marine environment
- INSTANT: Add fish same day, not weeks later
- PROVEN: Used and approved by commercial aquariums

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Product Dimensions | 10.16 x 3.3 x 17.02 cm; 226.8 g |
| Item model number | 870317004127 |
| Pet Life Stage | All Life Stages |
| Item Form | Liquid |
| Colour | White |
| Size | 8 ounce |
| Quantity | 1 |
| Specific Uses | Aquarium rapid cyclin |
| Batteries required | No |
| Batteries Included | No |
| Item Weight | 227 g |

## Images

![ATM Blue Shark (Formerly Colony Marine Rapid Cycle 25 gal Tank Cycle 8 oz - Image 1](https://m.media-amazon.com/images/I/71H675rbOrL.jpg)
![ATM Blue Shark (Formerly Colony Marine Rapid Cycle 25 gal Tank Cycle 8 oz - Image 2](https://m.media-amazon.com/images/I/71M-Z09qp1L.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: Can this b used when doing water charges**
A: yes but you have to keep skimmers off for 4 days when using it

**Q: Can this  more then once**
A: Yes No need to bacteria grows

**Q: My LFS just told me to add a bottle and wait for the ammonia to drop without having fish in cycle, but states adding fish??**
A: Yes add whole bottle wait an hour add couple of small fish but don't over feed them

**Q: Is this for saltwater tank**
A: Yes, I used this when I set up my marine tank and it worked great. I was able to add fish and livestock a lot quicker.

## Frequently Bought Together

- ATM Blue Shark (Formerly Colony Marine Rapid Cycle 25 gal Tank Cycle 8 oz
- iQuatics Ocean Reef Pro Marine Saltwater Coral Premium Aquarium Salt - 10KG - Refill

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*Product available on Desertcart Philippines*
*Store origin: PH*
*Last updated: 2026-01-31*