---
product_id: 253432727
title: "ISTAGulfstream Tropical AGU00529 Max Mix Co2 Reactor for Aquarium, Large"
brand: "ista"
price: "$74.49"
currency: USD
in_stock: true
url: https://www.desertcart.us/products/253432727-istagulfstream-tropical-agu00529-max-mix-co2-reactor-for-aquarium-large
store_origin: US
region: United States of America
---

# 100% CO2 dissolution No tools needed Compact & durable ISTAGulfstream Tropical AGU00529 Max Mix Co2 Reactor for Aquarium, Large

**Brand:** ista
**Price:** $74.49
**Availability:** ✅ In Stock

## Summary

> 🌊 Dive into Efficiency with the Max Mix Reactor!

## Quick Answers

- **What is this?** ISTAGulfstream Tropical AGU00529 Max Mix Co2 Reactor for Aquarium, Large by ista
- **How much does it cost?** $74.49 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/253432727-istagulfstream-tropical-agu00529-max-mix-co2-reactor-for-aquarium-large)

## Best For

- ista enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Durable materials resist acidity and impact for longevity.
- • **Effortless Setup:** Assemble in minutes with no tools required!
- • **Space-Saving Design:** Compact size fits perfectly in any aquarium setup.
- • **Ultimate Efficiency:** Dissolves 100% CO2 for optimal aquatic health.
- • **Powerful Performance:** Designed for pumps ranging from 250 to 500 GPH.

## Overview

The ISTAGulfstream Tropical AGU00529 Max Mix Co2 Reactor is a high-performance aquarium accessory designed to dissolve CO2 efficiently, ensuring optimal aquatic conditions. With a user-friendly assembly process, compact design, and durable construction, it caters to pumps between 250 to 500 GPH, making it a must-have for serious aquarists.

## Description

ISTAGulfstream Tropical AGU00529 Max Mix Co2 Reactor for Aquarium, Large

## Features

- MOST EFFICIENT: The Max Mix Reactor will dissolve 100% CO2 into the water. Patented impeller design completely eliminates the CO2 bubbles
- EASY ASSEMBLY: No tools required for setting it up. Diagram set up instructions printed on side of box illustrates exact position of reactor
- COMPACT: Makes it easy to fit exactly where you need it, internally or externally
- DURABLE: Resistant to acidity and impact. Easy to clean and simple to maintain
- Large size is designed for pumps from 250 to 500 GPH

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Product Dimensions | 0.05 x 0.05 x 0.05 cm; 9.07 g |
| Item model number | 529 |
| Item Form | Cylindrical |
| Size | 0.02x0.02x0.02 Inch (Pack of 1) |
| Number of Items | 1 |
| Quantity | 1 |
| batteries required | No |
| Batteries Included | No |
| External Testing Certification | Não aplicável |
| Item Weight | 9.07 g |

## Product Details

- **Brand:** ISTA
- **Item weight:** 0.02 Pounds
- **Item form:** Cylindrical
- **Target species:** Fish
- **Manufacturer:** ISTA

## Images

![ISTAGulfstream Tropical AGU00529 Max Mix Co2 Reactor for Aquarium, Large - Image 1](https://m.media-amazon.com/images/I/61xLEhSyQtL.jpg)
![ISTAGulfstream Tropical AGU00529 Max Mix Co2 Reactor for Aquarium, Large - Image 2](https://m.media-amazon.com/images/I/71CPTNAqTSL.jpg)
![ISTAGulfstream Tropical AGU00529 Max Mix Co2 Reactor for Aquarium, Large - Image 3](https://m.media-amazon.com/images/I/71EU76m3+FL.jpg)
![ISTAGulfstream Tropical AGU00529 Max Mix Co2 Reactor for Aquarium, Large - Image 4](https://m.media-amazon.com/images/I/71-XcUXukEL.jpg)
![ISTAGulfstream Tropical AGU00529 Max Mix Co2 Reactor for Aquarium, Large - Image 5](https://m.media-amazon.com/images/I/31ScTdMGLUL.jpg)

## Questions & Answers

**Q: Got mine hooked up but the blades inside are not moving at all. CO2 just accumulates at the top. How do I get blades to rotate?**
A: Sanding as described is a good idea ( I used 800 grit wet/dry). But the real problem is probably inside the water inlet tube where it enters the reactor body. Look into the water inlet tube; the opening at the reactor body should be perfectly round and there shouldn't be any plastic material protuding into the opening (it's particularly bad for propeller rotation if any excess material is protruding into the flow at the outside edge). My unit had about 10-15% of the diameter blocked at the outside edge - a small rat-tail file took care of that and the propellers-not-rotating-problem too. When reassembling the reactor, don't push the center tube assembly in tight - just far enough to mate the center tube with the water outlet. Then let screwing on the bottom cap push the center tube assembly into its final position. Both propellers should rattle freely after assembly. Good luck.

**Q: Does this size reactor bring two suction cups like the smaller version?**
A: Yes mine had 2. About a foot tall.  Worked good.

**Q: I see thats its mentioned they fit both 12/16 and 16/22mm, But I want to know if its 16/22mm with standard without an an adapter**
A: The larger diameter is supported via really crappy adaptors. It will restrict flow very significantly.

**Q: Will this work with an air pump instead of a canister filter?**
A: this works with a canister filter, but not an air pump.

## Frequently Bought Together

- Gulfstream Tropical AGU00529 Ista Max Mix Co2 Reactor for Aquarium, Large
- JARDLI Glass CO2 Drop Checker – CO2 Monitor Kit for Aquarium Planted Tank CO2 System (Drop Checker with Solution)

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-05-19*