milky stuff at the top of the tank? - Aquarium Advice

s2ary · 11-20-2006, 09:42 PM

I had a milky white precipitate at the top of a 265 gallon freshwater tank; does anybody know what it might be? Sulfur maybe?

I did a 100% water change, but I’m wondering what it was and how to avoid it in the future.

Thanks in advance,
Geoff

zenkatydid · 11-20-2006, 09:57 PM

i don't know what the precipitate was, but you did a 100% water change on a 265 gallon tank?! is that a typo? that's a lot of water!

rich311k · 11-20-2006, 10:09 PM

Move to general discussion, since no fish problems were mentioned. Do you have hard water? Maybe just mineral deposits. Not really a good idea to do 100% changes.

s2ary · 11-20-2006, 10:18 PM

The tank has been running with just plants in it for a few weeks now. I had a lot of dead leaves in it so I’m thinking maybe hydrogen sulfide, but it didn’t smell like eggs. Nitrates maybe?

Could it be a bacterium?

joannde · 11-21-2006, 09:33 AM

Are you doing a fishless cycle ? What are you using to cycle the tank (a raw cocktail shrimp or straight ammonia ?) Was it just at the very top or a general cloudiness ?

11-20-2006, 09:42 PM	#1
s2ary Aquarium Advice Newbie Join Date: Sep 2006 Posts: 8	milky stuff at the top of the tank? I had a milky white precipitate at the top of a 265 gallon freshwater tank; does anybody know what it might be? Sulfur maybe? I did a 100% water change, but I’m wondering what it was and how to avoid it in the future. Thanks in advance, Geoff

11-20-2006, 09:57 PM	#2
zenkatydid Aquarium Advice FINatic Join Date: Jul 2005 Location: Sydney Posts: 765 Images: 3	i don't know what the precipitate was, but you did a 100% water change on a 265 gallon tank?! is that a typo? that's a lot of water! __________________ 50gal planted - yoyo loaches, BNs, SAE, odessa barbs 28gal planted - sparkling gouramis, dwarf cories (hastatus, habrosus, pygmaeus) 5gal planted - betta, otos 5gal planted - glass shrimp, CRS

11-21-2006, 09:33 AM	#5
joannde Aquarium Advice Addict Join Date: Apr 2006 Location: Clearwater, FL Posts: 1,724 Images: 6	Are you doing a fishless cycle ? What are you using to cycle the tank (a raw cocktail shrimp or straight ammonia ?) Was it just at the very top or a general cloudiness ? __________________ 35G barebottom: 2 boesemani rainbowfish, 4 congo tetras, Low light plants (1.5wpg) attached to or planted in my own handmade ceramics - Anubia v Nana, Anubia v Barteri, Red Rubin Sword 2.5G - Spot (beautiful betta - Soft pink with red spots on his fins. Java Moss.

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11-20-2006, 10:09 PM	#3
rich311k Aquarium Advice Addict Moderator Emeritus Join Date: Jul 2005 Location: Long Island, NY Posts: 8,972 Images: 35	Move to general discussion, since no fish problems were mentioned. Do you have hard water? Maybe just mineral deposits. Not really a good idea to do 100% changes.

11-20-2006, 10:18 PM	#4
s2ary Aquarium Advice Newbie Join Date: Sep 2006 Posts: 8	The tank has been running with just plants in it for a few weeks now. I had a lot of dead leaves in it so I’m thinking maybe hydrogen sulfide, but it didn’t smell like eggs. Nitrates maybe? Could it be a bacterium?