water purifier that's safe for fish?

  • Thread starter Thread starter sass_lady
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sass_lady

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Today, my little air tube got stuck and was pushing the water up. So, I fixed it. Downside was, it shot a whoooollleeee fracking bunch of microscopic crud up ito the water. As far as I can see now, most of it has sunk back down to the bottom. But it's got me a little worried, so I was wondering what are the best water purifiers that you guys know of?

Don't confuse "water purifier" with "water conditioner", I already have a bottle of that stuff.

This is a 5 gallon tank with one quarter-sized hyperactive goldfish living inside of it, and a plastic thingamambob under the gravel. Also, what do I use to manually clean the tank thoroughly?
 
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