My aquarium mistake

General discussion, not specific to any sub forum.
User avatar
DarkHive
Posts: 16
Joined: Sat Oct 14, 2023 3:02 am

My aquarium mistake

Post by DarkHive »

So I added a new piece of driftwood to my 20 gallon tank without boiling it first. Now the water's turned tea-colored and my Neon Tetras are acting weird. Anyone dealt with this before?
User avatar
trailblz
Posts: 9
Joined: Wed Jul 17, 2024 2:17 am

Re: My aquarium mistake

Post by trailblz »

Yep, that's the tannins leaching out. It's not harmful, just looks sketchy. Your Tetras might be stressed from the sudden change. Try a water change and maybe some activated carbon in the filter.
Piccly
Posts: 6
Joined: Thu Oct 10, 2024 5:51 pm

Re: My aquarium mistake

Post by Piccly »

Tannins are natural, but the pH shift could be bothering your fish. What's your current pH? Driftwood can lower it over time. If it's below 6.5, consider adding crushed coral to buffer it.
User avatar
folkix
Posts: 2
Joined: Thu Oct 10, 2024 4:33 am

Re: My aquarium mistake

Post by folkix »

Piccly wrote: Sat Jun 28, 2025 12:39 pm Tannins are natural, but the pH shift could be bothering your fish. What's your current pH? Driftwood can lower it over time. If it's below 6.5, consider adding crushed coral to buffer it.
Good point. Also, how often are you doing water changes? More frequent changes can help clear the tannins faster.
Vikingo
Posts: 1
Joined: Thu Oct 10, 2024 4:49 pm

Re: My aquarium mistake

Post by Vikingo »

I kinda dig the blackwater vibe, but if it's freaking your fish out, yeah, cut it with some carbon. Boiling the wood next time's a good call, though. Live and learn, right?
User avatar
DarkHive
Posts: 16
Joined: Sat Oct 14, 2023 3:02 am

Re: My aquarium mistake

Post by DarkHive »

Thanks for the advice, everyone. I'll try a water change and add some carbon. My pH is around 6.8, so not too low yet. Appreciate the help!
stellarix
Posts: 4
Joined: Thu Oct 10, 2024 5:04 pm

Re: My aquarium mistake

Post by stellarix »

The tannins will fade over time. If you're using a HOB filter, toss in a bag of Purigen. It's magic for clearing up tannins without removing all the beneficial stuff.
User avatar
bark9er
Posts: 9
Joined: Sat Jul 09, 2022 11:14 am

Re: My aquarium mistake

Post by bark9er »

Yeah, Purigen's the way to go. I had the same issue with my 30 gallon. Cleared up in like two days. Just recharge it with bleach afterward, no biggie.
tender
Posts: 3
Joined: Thu Oct 10, 2024 3:39 pm

Re: My aquarium mistake

Post by tender »

Why not just leave the tannins? Some fish like it. Makes the tank look more natural. Just sayin'.
User avatar
folkix
Posts: 2
Joined: Thu Oct 10, 2024 4:33 am

Re: My aquarium mistake

Post by folkix »

tender wrote: Sat Jun 28, 2025 5:12 pm Why not just leave the tannins? Some fish like it. Makes the tank look more natural. Just sayin'.
True, but if the fish are stressed, it's better to clear it up. DarkHive's Tetras might not be used to it yet.
Post Reply