Gulfstream Tropical AGU00512 Ista Co2 Diffuser Set for Aquarium

Having used co2 for my aquariums for some time, this product looked funny to me. The price was good so I gave it a try! Wow! It did just as good as any other simple co2 system. Some as much as 4 times the cost. Everythings included, and it lasts a long time. Plug and play! Took 2 minutes to set up. Perfect for beginners and pro's with a small tank waiting to bloom. Buying more, maybe even losing some of the more bulky systems with similar diffusion .

The can last about 2 or 3 days and it does absolutely nothing for your plants. Complete waste of money

It is very easy to install and you can see the benefits in a few days. It keeps the plants with a vivid color and make them grow tall. The design allows you to control the level of CO2 inside the diffuser and consequently inside your tank, holding the plants growth if you want to.

Easy to use, no real instructions. For clueless people like me, the little yellow thing with the arrow...arrow should point toward aquarium. It is the valve that stops the CO2 from leaking back out. If you can not see the arrow, blow into each side, the side that allowed air through, place the end you blew into on the can side. If you got it right, it will fill up. Now, my experience with these. I've used them for a few months now, saw no real growth but nothing died. I do think it helped and so easy to use. Bought 10, some diffusers do not hold CO2, none of them stick after a few weeks. Dumped all the CO2 into the tank at once! Thought all fish would die...no reaction. Happened in two tanks twice without me touching it, suction fails. I thought for sure large amounts of CO2 would kill fish. It's not like the cans are full of air. So no worries if this happens to you. I took heater suction cups, clipped the tongs off it and tied the diffuser to it, works great now. I am hoping to see a difference soon. UPDATE: USED FOR OVER A YEAR...same cans...why??? So bought 10 and 80% of air valves (yellow things) Visibly leaked. So replaced. Containers now stay full minus 1/4 inch for months. Nothing happens..in 10 different tanks. The ones with the yellow valves will go in about a month..why? I imagine they have a slow leak. No change in plants, any growth would be due to fert using. This does nothing, probably why dumping a full load in the water all at once did nothing to fish or pH. Try replacing valves that leak and using no fert and see how well the system works.

Great product!

So this is a neat little CO2 system for those who don't quite know if they want to commit to it in their aquariums. You set it up, place the plastic piece in your aquarium and push the button on the bottle until the plastic holder fills up with CO2. Then it just diffuses into the water, simple as that. But I found myself having to fill the CO2 at least two times a day in a smaller 5g aquarium so I'd imagine if you've got anything bigger than a 10g this is not for you. There are other options out there for those that want to try CO2 but this is a pretty simple way to start.

Honestly it did not do too much for my aquarium since the diffuser did not work too well. It may work on a smaller tank, otherwise I would just pay the money for a better Co2 system.

I have a small 5 gallon planted tank and didn’t want to add pressurized co2 to a small tank, so I bought this. Works as described. I’m getting great growth since using it. I would recommend getting a better check valve as the one included allowed gas to seep out.

It does as it should. I can’t comment on whether it actually helps plants grow yet as I don’t think it has been long enough.

This is a simple passive C02 system for those who don't need or want a high tech set-up. The C02 dissipates in your tank as needed and I find this design better than the Tropica kit as the C02 chamber is smaller and the shape allows for better distribution. For larger tanks, you can link the diffusers together in a chain. This system has increased the growth of my plants without the expense of bubble counters, and big C02 tanks.

Not longer than month

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