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?

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.

Does this size reactor bring two suction cups like the smaller version?

Yes mine had 2. About a foot tall. Worked good.

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

The larger diameter is supported via really crappy adaptors. It will restrict flow very significantly.

Will this work with an air pump instead of a canister filter?

this works with a canister filter, but not an air pump.

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

Gulfstream Tropical AGU00529 Ista Max Mix Co2 Reactor for Aquarium, Large

Product ID: 7290908

Details

Brand
ISTA
Item Form
Device
Item Weight
9.07 g
Number of Packs
1
Unit Count
1 Count

💨100% CO2 dissolution

📏Fits pumps 250-500 GPH

🛠️Tool-free assembly

¥12932

Duties & taxes included

In stock

Sold byAmazon JapanDelivered 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 Japan.

Secure transaction

Description

🌿 Elevate your planted tank game with zero CO2 waste—because your aquarium deserves the best!

BUILT TO LAST - Durable, acid-resistant materials withstand impact and simplify maintenance.
HASSLE FREE SETUP - No tools needed—quick, intuitive assembly with clear diagram instructions right on the box.
SPACE SAVVY DESIGN - Compact form factor fits seamlessly inside or outside your aquarium setup.
OPTIMIZED FOR POWER - Large size perfectly matches pumps from 250 to 500 GPH for consistent performance.
MAXIMIZED CO 2 EFFICIENCY - Patented impeller design ensures zero CO2 bubble loss for lush, vibrant plants.

The Gulfstream Tropical AGU00529 Ista Max Mix CO2 Reactor is engineered to dissolve 100% of CO2 into aquarium water using a patented impeller that eliminates bubble loss. Designed for pumps between 250-500 GPH, it offers tool-free assembly, a compact footprint for flexible placement, and durable, acid-resistant construction for long-lasting use and easy maintenance.

Specifications

Asin	B005DGJEGC
Best Sellers Rank	#2,027 in Aquarium Water Treatments
Date First Available	July 19, 2011
Item Model Number	529
Manufacturer	TopDawg Pet Supply
Product Dimensions	0.02 x 0.02 x 0.02 inches; 0.32 ounces

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

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.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

Farhan Q.

The delivery time was excellent, and the packaging was secure.

2 months ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

¥12932

Duties & taxes included

In stock

Sold byAmazon JapanDelivered 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 Japan.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

View all Trustpilot reviews