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C02 and water changes

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So I had a extra line on my C02 system so I decided to add CO2 to my low tech goldfish aquarium to push the growth a little....currently I'm running very little C02 about 1 bubble every few secs.... my question is....I like to do a 50% water change on this tank about once a week or so should I turn off my C02 system during the change or is it ok being left on?? 







goldfish 2.jpg


Edited by plantedAlex
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