CO2 Natural Plant System Activator & Stabilizer Refill Pack, 3-Pack

I wouldn't bother buying this as you can easily recharge your canister with yeast & baking soda. We have the Hagen Co2 setup that this product is for and my husband tried making his own mix by filling the canister as usual with the prescribed sugar and lukewarm water and added a 1/4 teaspoon of breadmaking yeast granules and 1/2 teaspoon of baking soda and it works great.

That said, the Hagen unit is great value, but the "activator" is merely yeast granules and the "stabilizer" merely baking soda, (NOT baking powder). For the cost of these little packets, you can buy a jar of yeast and a box of baking soda that will be many times the amount you get in the packets. But hey, if you can't be bothered with measuring, go for it!

I have been using this product for at least three years now. I have to say is and excellent way to improve the grow, colors and health of your plants (almost to good).

The only considerations you have to take are:

1Install it in a place where you can easily access to maintain it (careful with the water)

2Regular measure the water Ph and Kh (it drops both because of the CO2). Consider to use only during the day period of your aquarium.

3Make a little research about the best aquarium light you can use to improve the C02 effect.

4Wait three weeks for the results.

5You will have to regular cut the long leafs (depending of your plants).

6Consider quit the active carbon if your using liquid of pills plants activators.

The price is a little high but the results are really good if you have a plan and good practices with your tank.

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It's the first time I have had this product that was fresh not something I get at a local pet store where the exp. date was 2 or more years past due

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I did try a DIW version and then swicthed to the low tech kit which uses these replacement packs. They work well and produce CO2 without much cost. I am happy with it.

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Never truly lasts as long as the product suggests. Really just better off making your own mix . {yeast water sugar baking boda}

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