best discus tank water clarity

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lad
Posts: 14
Joined: Sat Feb 17, 2024 11:11 pm

best discus tank water clarity

Post by lad »

My Discus tank water's been cloudy for days, even after water changes. Running a Fluval 407, 75 gallon tank, temp at 86F, feeding beef heart mix twice daily. Any ideas what's messing with the clarity?
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knight
Posts: 36
Joined: Tue Dec 27, 2022 8:31 am

Re: best discus tank water clarity

Post by knight »

Cloudiness could be bacterial bloom or fine debris. How often are you doing water changes? With beef heart, you might need 50% changes every other day. Also, check if your filter media's clogged or needs rinsing in tank water.
Coralite
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Joined: Thu Oct 10, 2024 6:15 pm

Re: best discus tank water clarity

Post by Coralite »

knight wrote: Wed Aug 27, 2025 12:43 pm Cloudiness could be bacterial bloom or fine debris. How often are you doing water changes? With beef heart, you might need 50% changes every other day. Also, check if your filter media's clogged or needs rinsing in tank water.
Yep, knight's spot on. Beef heart's messy stuff. I'd add a pre-filter sponge to catch gunk before it hits the canister. My Discus tank cleared up after I started using Seachem Purigen in the filter.
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Fade
Posts: 18
Joined: Mon Sep 23, 2024 5:10 pm

Re: best discus tank water clarity

Post by Fade »

Had the same issue last month. Turned out my substrate was leaching fines. Switched to bare bottom, problem gone. If you're attached to substrate, try vacuuming deeper during changes.
lad
Posts: 14
Joined: Sat Feb 17, 2024 11:11 pm

Re: best discus tank water clarity

Post by lad »

Thanks, all. Gonna try Purigen and up the water changes. Didn't realize beef heart was that messy, but they love it.
Dock
Posts: 13
Joined: Sat Oct 01, 2022 9:06 pm

Re: best discus tank water clarity

Post by Dock »

Bacterial blooms often follow overfeeding. Cut back to once daily for a week, see if it helps. Also, test for dissolved organics—high TDS can haze water even with zero ammonia.
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Kargo
Posts: 23
Joined: Thu Feb 10, 2022 9:44 pm

Re: best discus tank water clarity

Post by Kargo »

Dock wrote: Wed Aug 27, 2025 2:38 pm Bacterial blooms often follow overfeeding. Cut back to once daily for a week, see if it helps. Also, test for dissolved organics—high TDS can haze water even with zero ammonia.
Exactly. And if you're dosing any supplements, check those too. Some plant ferts can cause cloudiness if overdosed.
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Lish
Posts: 18
Joined: Thu Nov 10, 2022 8:33 pm

Re: best discus tank water clarity

Post by Lish »

My tank cleared up when I added more plants. Floating ones like frogbit seem to help balance things. Maybe give that a shot?
sunny
Posts: 10
Joined: Thu Oct 10, 2024 6:13 pm

Re: best discus tank water clarity

Post by sunny »

I had cloudy water until I switched to RO. Tap had too many dissolved solids. Now it's crystal clear, but I remineralize with Discus Trace.
Boldie
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Joined: Mon Jul 24, 2023 4:47 am

Re: best discus tank water clarity

Post by Boldie »

Anyone here into vintage motorcycles? Just picked up a '78 Honda CB750.
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