Has anyone used this long-term? Thoughts-?

Yes I've used "one", for a year and a half. very effective for plant growth. Simple to use, however it's almost impossible to find additional CO2 cans without having to buy the whole kit.

can i use a glass diffuser instead of the 2 big plastic containers

i tried using an aftermarket glass diffuser but didnt work :( i guess the pressure in the cans arent enough pressure to push through the glass. Well I also guess it depends on the type of diffuser but didnt work for me

Can anyone tell me, would this diffuser work with a 55 gallon planted aquarium? Any other hints or advise would be greatly appreciated.

Hello Robert, To be honest this is what I found regarding this product. We have thousands of products so based off of the manufacturer description this is what I found. "Gulfstream Tropical AGU00512 Ista Co2 Diffuser SetCo2 Diffuser Set A perfect CO2 supply for small planted aquarium or beginners simple to set up and operate extendable CO2 diffusing chamber provides options of CO2 supplying rate. Include 1 can pressurized liq 1 check valve, 1 CO2 diffuser 1 flexible tube.Features Ista co2 diffuser set Indisputable quality and reliability These are the most practical diffusers available "I think it is mostly for a smaller space. 55g is quite large, I believe this is better suited for small/med aquariums. Hope this helps. Gabriela

Is there replacement co2 cans?

I also tried to find replacement but only could find the whole set including the diffuser. However it seems to be a good deal anyway, as the set can be compared to other brands CO2 bottles only, for a cost stand point.

Gulfstream Tropical Agu00512 Ista Co2 Diffuser Set For Aquarium

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Description

🌿 Elevate your aquarium game with precision CO2 diffusion!

DURABILITY YOU CAN TRUST - Crafted for consistent performance with top-tier materials
SEAMLESS CO 2 INTEGRATION - Ensures optimal gas dispersion for lush aquatic plant growth
COMPACT DISCREET DESIGN - Minimal footprint keeps your aquarium aesthetic pristine
PLUG AND PLAY PRACTICALITY - No extra components needed—easy setup for busy pros
TAILORED FOR AQUATIC ECOSYSTEMS - Perfectly calibrated for fish and algae-eater friendly environments

The Gulfstream Tropical ISTA CO2 Diffuser Set delivers reliable, high-quality CO2 diffusion designed specifically for planted aquariums. Compact and easy to install, it ensures optimal gas dispersion to promote vibrant aquatic plant growth while maintaining a clean, unobtrusive look. Backed by a 30-day warranty, this diffuser is a practical choice for aquarium enthusiasts seeking consistent performance and ecosystem balance.

Specifications

ASIN	B005DGJBYW
ASIN	B005DGJBYW
Age Range Description	Young Adult
Best Sellers Rank	#293,594 in Pet Supplies ( See Top 100 in Pet Supplies ) #1,982 in Aquarium Water Treatments
Brand Name	ISTA
Color	White
Customer Reviews	3.6 3.6 out of 5 stars (119)
Date First Available	July 19, 2011
Date First Available	July 19, 2011
Directions	Ship ground only using an ORM-D label
Included Components	No additional items required
Item Dimensions LxWxH	0.02 x 0.02 x 0.02 inches
Item Package Dimensions L x W x H	9.5 x 4.8 x 2.9 inches
Item Weight	9.07 g
Item model number	512
Item model number	512
Manufacturer	TopDawg Pet Supply
Manufacturer	TopDawg Pet Supply
Model Name	ISTA
Product Dimensions	0.02 x 0.02 x 0.02 inches; 0.32 ounces
Specific Uses for Product	CO2 for planted aquariums
Target Audience Keyword	Fish, algae-eaters
Warranty Description	30 days after initial purchase

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