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I made a 2 cup to 2 tsp ratio co2 gen for a 10 with a lot of green is this an ok amount of co2. I don't want to come home to a dead tank thanks in advance
Knowing the recipe you used does not at all address how much CO2 is actually in your tank. You need to measure the CO2 concentration of your water to know with some accuracy how much you are dissolving into the water.
Check out the portion of this article that deals with measuring CO2. It should help explain how to find the answer to your question: