HOW TO SANITIZE A JAR OR TANK THAT HOSTED A SICK BETTA:
Soak empty jar & fishnet, in a mixture of tap water and Clorox (1 part Clorox to 20 parts water ). CLOROX KILLS BETTAS!!! So OBVIOUSLY never ever let it come into contact with your fish! Only soak objects in the mixture, not the sick bettas!! (DUH!). You should let the stuff soak for about one hour. Then you should RINSE RINSE RINSE and RINSE again. Wipe dry with a paper towel, and the jar is as good as new. Nothing can survive the hour long Clorox/water dip treatment! Hehehehehe.
If a whole tank is infected badly, you might want to tear it down. Move all fishies to new quarters. Empty contaminated tank. Throw away any LIVE plants. Empty all rocks and gravel. The tank should be filled with water and Clorox should be added (same proportion as above). Throw in there the filter (Throw away all the filtering media before soaking filters), heater, thermometer, any plastic plants, anything plastic. Let it soak for a few hours. Then empty and rinse rinse rinse etc… ROCKS AND GRAVEL cannot be soaked in Clorox as they will absorb it and then probably poison your fish. I put the gravel and rocks in a tray and bake them in my oven at 450F for about an hour. Kills everything. Then let them cool off and put them back in your tank (AFTER YOU HAVE RINSED TANK FROM THE CLOROX/WATER MIXTURE). Put brand new filtering media in your filter, and put your tank back together, fill with water and let it run for a few days before adding bettas to it. I recommend using “CYCLE” which helps reintroduce the nitrobacter which are necessary to your tank’s filtration.
WARNING! Chlorox may leave residue in your tank's silicone. If you are bleaching an acrylic tank, the acrylic walls will absorb some chlorox and later spew it back into the water
(. What to do then? After rinsing, fill again with water and add A LOT of rock salt. Salt will draw chlorox back out. Then you can empty tank again, rinse and set it up safely. Another good trick to use in conjunction with salt is direct sunlight. Sunlight will neutralize bleach so if you can, leave your tank/jars out in the sun for a day and let them get a good tan LOL. All bleach will be gone, poof, and bettas shall be safe and happy
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