Is this aquarium safe? - The Planted Tank Forum
 
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post #1 of 14 (permalink) Old 09-02-2015, 02:47 PM Thread Starter
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Is this aquarium safe?

I saw this candle holder at dollar general, and thought it looked like the perfect betta cave. It is glazed ceramic. Is this ok to put with a betta? Is it possible for anything to leach into the water?

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post #2 of 14 (permalink) Old 09-02-2015, 03:44 PM
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All glazed would be. I'm more skeptical/w store bought items than "collected" ones.
The glaze will keep whatever is in it...in it.
Without the glaze you have no idea what it might put in your tank. Since it's not
a food container it could have any contaminate you might imagine in the material
which it was made from. But that glaze makes me feel like it's safe for the tank.
AND those holes in the back, likely to place facing forward for the light of the candle to go out from, makes it able to have flow through so not a dead aria of water.

The shortest distance between any two points is a straight line...in the opposite direction...
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post #3 of 14 (permalink) Old 09-02-2015, 05:54 PM
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Considering the glaze is very hard and durable combined with the amount of water many of us change, I would call it totally safe once cleared of any surface contaminants.
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post #4 of 14 (permalink) Old 09-02-2015, 06:01 PM
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Yes I'd say glazed is safe.
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post #5 of 14 (permalink) Old 09-02-2015, 06:31 PM
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Is the bottom glazed too? Sometimes they cut corners by leaving that bare.

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post #6 of 14 (permalink) Old 09-02-2015, 07:09 PM
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what about something like this? http://www.amazon.com/Adorable-Ceramic-Succulent-Planters-Decorative/dp/B00TT63W6A I actually have a few in my tank already (only for a few days) but feel unsure about it now that I've read this thread. You can't tell in the pictures, but there is definitely some sort of stain on these to darken their color, and no glaze...
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post #7 of 14 (permalink) Old 09-02-2015, 07:40 PM Thread Starter
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Quote:
Originally Posted by TINNGG View Post
Is the bottom glazed too? Sometimes they cut corners by leaving that bare.

It is
Thx all for your responses
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post #8 of 14 (permalink) Old 09-02-2015, 07:45 PM
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I thought glaze could be heavy in lead?

Quote:
Composition

Raw materials of ceramic glazes generally include silica, which will be the main glass former. Various metal oxides, such as sodium, potassium and calcium, act as a flux to lower the melting temperature. Alumina, often derived from clay, stiffens the molten glaze to prevent it from running off the piece. Colorants, such as iron oxide, copper carbonate or cobalt carbonate, and sometimes opacifiers such as tin oxide or zirconium oxide, are used to modify the visual appearance of the fired glaze. Glaze for lead-glazed earthenware is transparent and glossy after firing.
https://en.wikipedia.org/wiki/Ceramic_glaze


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post #9 of 14 (permalink) Old 09-02-2015, 07:58 PM Thread Starter
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I thought glaze could be heavy in lead?

Quote:
Composition

Raw materials of ceramic glazes generally include silica, which will be the main glass former. Various metal oxides, such as sodium, potassium and calcium, act as a flux to lower the melting temperature. Alumina, often derived from clay, stiffens the molten glaze to prevent it from running off the piece. Colorants, such as iron oxide, copper carbonate or cobalt carbonate, and sometimes opacifiers such as tin oxide or zirconium oxide, are used to modify the visual appearance of the fired glaze. Glaze for lead-glazed earthenware is transparent and glossy after firing.
https://en.wikipedia.org/wiki/Ceramic_glaze
: \
I guess better safe than sorry
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post #10 of 14 (permalink) Old 09-02-2015, 08:56 PM
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: \
I guess better safe than sorry
Sorry to rain on your parade


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post #11 of 14 (permalink) Old 09-02-2015, 09:40 PM Thread Starter
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Quote:
Originally Posted by fishyfishy101 View Post
: \
I guess better safe than sorry
Sorry to rain on your parade
That's ok ; )
I don't want a dead betta

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post #12 of 14 (permalink) Old 09-03-2015, 08:30 PM
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The lead in the glaze is probably an oxide of lead, and once it is melted onto the vase it shouldn't be at all easy to dissolve any of the lead into the water. Glass can contain lead too, you know. Also, unless the pH is very low I doubt that even pure lead would be dissolved into the water.

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post #13 of 14 (permalink) Old 09-03-2015, 08:37 PM
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Quote:
Originally Posted by Hoppy View Post
The lead in the glaze is probably an oxide of lead, and once it is melted onto the vase it shouldn't be at all easy to dissolve any of the lead into the water. Glass can contain lead too, you know. Also, unless the pH is very low I doubt that even pure lead would be dissolved into the water.
For example: lead plant weights

Bump: Also I thought lead glazed pottery was pretty rare these days. I'd imagine that wouldn't be a dollar store item.
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post #14 of 14 (permalink) Old 09-03-2015, 09:37 PM
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Also do we want to ignore that we all eat off glazed dishes much of the time? There seems to be a wave of hyper-worry about things that we have used and dealt with for years. Pumps, pipes, and water storage have been metal for a very long time but now we worry about putting a small screw in the tank.
Change the water now and then. The solution to pollution REALLY is dilution.
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