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What does it mean to take 25 percent of the water out and put it back in for a fish tank how do you do that?
Candaceleah21
This is whats called a "water change". What it does is filter out some of the water, without removing the helpful bacterias that make a fish take work. Most pet stores will sell the you tubing that makes this pretty easy. you just submerge the tubing and gravity will pull out the water into a bucket. id suggest a 5 gal bucket so you know how much water you are pulling out. 5 gallons is 25 percent of a 20 gallon tank. Dump that water, and then refil the bucket with tap water. Add some water conditioner, or...let the water sit out for atleast 24 hours. Then dump it in.
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∙ 14y ago
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