How to deal with cloudy water in Betta tanks

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kadyash
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Joined: Mon Jan 17, 2022 9:00 am

How to deal with cloudy water in Betta tanks

Post by kadyash »

My betta tank's water has been cloudy for days, even after a water change. I've got a 5-gallon with a sponge filter, and I feed him twice a day. What's the deal?
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photobug
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Joined: Wed Apr 20, 2022 9:46 am

Re: How to deal with cloudy water in Betta tanks

Post by photobug »

Cloudy water usually means a bacterial bloom. Check your ammonia and nitrite levels first. If they're high, it's likely a cycle crash. How often do you change the water?
FryBoys
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Joined: Thu Oct 10, 2024 1:59 pm

Re: How to deal with cloudy water in Betta tanks

Post by FryBoys »

Yo, same thing happened to me last week. I cut back on feeding and did small water changes every other day. Cleared up in like, four days. Try that.
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Lippyton
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Re: How to deal with cloudy water in Betta tanks

Post by Lippyton »

FryBoys wrote: Thu Jun 26, 2025 1:12 am Yo, same thing happened to me last week. I cut back on feeding and did small water changes every other day. Cleared up in like, four days. Try that.
Yep, overfeeding's a common culprit. Also, what's your substrate? Fine sand can kick up particles if you're not careful.
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Riveraide
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Re: How to deal with cloudy water in Betta tanks

Post by Riveraide »

Mine did this when I first set it up. It's just the tank settling, probably. Give it time unless your fish seems stressed.
Vikingo1
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Joined: Thu Oct 10, 2024 4:53 pm

Re: How to deal with cloudy water in Betta tanks

Post by Vikingo1 »

If it's white cloudy, it's bacteria. Green means algae. Either way, reduce light exposure and check your filter media. A UV sterilizer can help if it's persistent.
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kadyash
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Joined: Mon Jan 17, 2022 9:00 am

Re: How to deal with cloudy water in Betta tanks

Post by kadyash »

Thanks, everyone. I'll test the water and cut back on food. Appreciate the tips!
rotorblade
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Joined: Thu Oct 10, 2024 8:40 pm

Re: How to deal with cloudy water in Betta tanks

Post by rotorblade »

Had this issue with my 10-gallon. Turned out the filter wasn't cycled properly. Added some beneficial bacteria, and it cleared right up.
duskflow
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Joined: Thu Oct 10, 2024 6:59 pm

Re: How to deal with cloudy water in Betta tanks

Post by duskflow »

How old is your tank? New tanks often go through this phase. Just keep up with maintenance, and it'll stabilize.
police
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Joined: Thu Oct 10, 2024 4:13 pm

Re: How to deal with cloudy water in Betta tanks

Post by police »

Vikingo1 wrote: Thu Jun 26, 2025 6:20 am If it's white cloudy, it's bacteria. Green means algae. Either way, reduce light exposure and check your filter media. A UV sterilizer can help if it's persistent.
Agreed. Also, avoid overcleaning the filter. You'll kill off the good bacteria.
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