Q: TA wrote, A few weeks ago my betta died from Dropsy (I think) and I want to get a new one. How do I sanitize my aquarium so that my new betta doesn’t pick up the germs? Is bleach safe to use in an aquarium?
A: Bleach is one of the safest and most effective methods for sanitizing an aquarium before the initial set-up. Many people are afraid to use bleach because they are afraid of its potency but actually it is perfectly safe if used correctly. We use bleach for sanitization because it is one of the most successful chemicals we have for disinfecting. It is commonly used in U.S. hospitals and is recommended by the Center for Disease Control. Bleach or Sodium hypochlorite (NaClO), is also safe for the environment. It breaks down very quickly, leaving mostly salt and water behind. Because it is a strong disinfectant that breaks down into harmless byproducts rapidly, it can be used to sanitize baby and pet toys, aquariums and yes it is even used to sanitize our water supply.
Aquarium gravel, decorations, filters, heaters, etc. can also be bleached using the same concentration of water to bleach. You can either spray them or soak them in a bowl depending on what you are cleaning. Just be sure to rinse very well and allow everything to air dry completely before putting back in the aquarium. Note that metal rusts quickly when exposed to bleach. As mentioned earlier, never allow bleach to sit on the item for more than 10 – 15 minutes.
IMPORTANT SAFETY INFORMATION:
Bleach can be very dangerous if inhaled or ingested. It can cause moderate to severe damage if it comes in contact with the eyes or skin. It can also cause discoloration or corrosion of some materials. Please view the International Chemical Safety Card before using bleach.
Buddy, originally uploaded by Looking Up Photography (Karen).
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Quick question, not sure if anyone will see or respond. If you leave a tank empty (with substrate still intact) how long does it have to sit before the bacteria would die off? Reason being my 36g bowfront has sand as a substrate, and it will be a huge project to get that thing cleaned out.
Thanks!
Great question but I don’t know the answer. I have also heard of people laying it out to dry to kill bacteria though I doubt if there is any science (readily available) that offers assistance to us hobbyists. A detailed experiment would have to be done looking at various kinds of bacteria, environmental exposures (sun, humidity, temperature), dry time, etc. It is probably not a true method of sanitization.
….best to just get rid of all the substrate, and boil all plastic and or silk plants, decor ect. Replace with all new sand and or gravel. Clean out the aquarium as stated above or Ive had great succcess by adding 1 cup bleach to a empty 20 gallon, filled to top with water and let it set for a full 24 hours, drain it all out, and rinse several times.
i have bleached my ornaments in hot water as done before. a bamboo stick/plant, silk/plastic plants and resin figures. i have rinsed them thoroughly and put them back in the tank. the fish have all died and the tank smells of bleach. i am gutted. please can you help as now i want to replenish the tank. i still have the water in the tank. how can i insure that the tank and the ornaments will be clean from bleach and non hazardous to any new fish. and will my tank be damaged due to the bleach as i dont think there is a lot of bleach in it at the moment.. also will i have new tank syndrome.
Thanks
Martin, you need to thoroughly rinse the tank, i.e. fill with fresh water, move everything around for a while (run your hads through the gravel, shake out the ornments and run the filters)
Then drain completely, refill the tank, and double dose with dechlorinator (Tetra Aquasafe or similar). Run the filter again and shake out the insides (to get the dechlorinator everywhere). Then re-change the water with normal dose of aquasafe. Now you have a dead tank and need to recycle (new tank synfrome). Get a bottle of Stress Zyme or other bacterial starter, and dose according to instructions. In a week you can probably add fish again. Go easy with a fish or two at first. Then add more. Good luck!
What if you lost track of time and the tank sat for longer than 15 min? Is there any risk for the fish after the tank has been thoroughly rinsed and then dried completely?
My fish have ick and velvet. They and the tank are in bad shape iv put them in a new tank but now I have to sanitze the please tell me the bleach will work and how to prevent my little friends from getting it agine.
I know it’s been some time since someone posted, but I live in Costa Rica, no heaters needed. I have only a 10 gal tank (because I’ve had bigger and just want something that reaches homeostasis. Anyhow, I have 4 (now) big angles, and three neon tetras (out of eight).
I introduced some very small “pond” plants that at first looked cool, but soon over took the tank. Then everything turned blackish, regarding all the algae and natural stuff, and I had infestation of snails. All the sides turned green/brown and I couldn’t even see into the tank. My two glass catfish of two years died, one at a time.
Today I saw this website, took out a cooler and soaked everything in 10% bleach. Cleaned everything, but get this, I took Tilex (of all things) and sprayed the tank glass inside, left it. Wash, rinse, rinse. Acted like a gold miner when cleaning the gravel. I reset everything, cleaning the filter and new carbon, filled it with tap water 9 gallons.
Lots of dechlorinator, added back 1 gal of original water. Bought five new tetras today, and more upscale fake plants for them to hide.
Everyone is alive! thanks for the site
ok, maybe it’s best if I give you an update tomorrow or a week, one neon bye bye