Dear Gabriel: Chloramine does not evaporate from tap water. If your water-treatment facility uses chloramine, instead of chlorine, you will have to use de-chlorinator. My, water-treatment facility uses chlorine. Chlorine evaporates, from tap water. I have buckets of water, sitting in closets, about my house, so that I can use water from them, much of the time, instead of de-chlorinator. Chlorine can evaporate from tap water in a few hours to a day if left in an open container and exposed to air. However, the time it takes for chlorine to evaporate depends on several factors, including: 1. Temperature: Warmer air speeds up evaporation. Colder water can hold onto chlorine for longer. 2. Amount of chlorine: Higher chlorine levels can make evaporation take longer. 3. Amount of water: The amount of water can affect how long it takes for chlorine to evaporate. I tried, for years, to select-breed blue guppies, without any orange. I thought I had succeeded, but even my, best males wound up developing some orange, in their coloration, as they aged. If you’t like to see them, please search for this video, on KZfaq: Blue Guppies in a Shot Glass 2-16-19 I’d send you a link, but I believe KZfaq will disallow my comment, if it contains a link. If you want to grow your, KZfaq Channel, the best way I know of it to leave nice comments on many, small, FishFam channels. I’m up to 760 subscribers, but I just KZfaq, to fellowship, with other aquarists. The health and happiness of aquatic pets and plants is the point, of my channel. Thank you for posting this, exciting update. All my best, Sincerely, E. J. Brinegar

Very cool banner Gabriel.

I will be 500🎉 Congratulations Let's Go!

Yes the chlorine will come out over time, but I'd suggest still using a dechlorinator. You can get a huge bottle like tetra brand very cheap. I like prime because it also neutralizes ammonia and nitrite for 48 hours which can be an extra line of defense particularly during water changes, however it is expensive, but very concentrated. I love the banner! Things are coming along for sure

Yes Gabriel it will gas off all by itself. But faster with an air stone or sponge filter to breakup the surface Tanks are looking good love the blue guppies

Looks great!

Pretty cool banner

I age tanks with just water, no “products”or fish. Chlorine should off-gas just fine. I cycle for many weeks even months incl. maintenance/testing.