Hannee 28 Posted November 3, 2013 My mother does alot with ceramics and for my birthday yesterday she had made me a decorative ornament for my goldfish tank. I believe it is earthenware with a glaze over it and I basically just want to know if there is anyway I could make it safe for the tank. I'd feel mighty bad if they couldn't have it after all that but I can't risk hurting my babies 0 Quote Share this post Link to post Share on other sites
Helen 8,511 Posted November 3, 2013 I don't know anything about ceramics since I've never used them in my tanks. I have seen other members use terracotta pots in their tanks. I'm just stopping by to say Happy Birthday to you 0 Quote Share this post Link to post Share on other sites
Daniel E. 10,021 Posted November 3, 2013 (edited) If it is a fired glaze and its not hollow you should be fine If it is hollow then you willl need to fix that first. Sent from my SCH-I535 using Tapatalk 2 Edited November 3, 2013 by Daniel E. 0 Quote Share this post Link to post Share on other sites
GoldenSpoiledRotten 6,786 Posted November 3, 2013 What glaze did she use? There are food safe and not food safe glazes. Food safe can stand up to water and non food safe cannot generally. Is it 100% sealed in glaze? 0 Quote Share this post Link to post Share on other sites
Flipper 13,057 Posted November 3, 2013 Happy Birthday!!!!!! 0 Quote Share this post Link to post Share on other sites
DawnMichele 6,045 Posted November 3, 2013 Happy Birthday!!!!! 0 Quote Share this post Link to post Share on other sites
Hannee 28 Posted November 3, 2013 Thanks for the happy birthdays guys It is a food safe glaze I believe but the bottom isn't isn't glazed (if the bottom is glazed it sticks to the kiln) and it isn't hollow, would sealing the bottom in aquarium sealant be an idea? I really hope I can put it in soon when I get my new sand in 0 Quote Share this post Link to post Share on other sites
Daniel E. 10,021 Posted November 3, 2013 Yeah I'd use an aquarium safe sealant on the bottom. THen you should be good to go Sent from my SCH-I535 using Tapatalk 2 0 Quote Share this post Link to post Share on other sites
great_kahn 109 Posted November 3, 2013 I have a glazed pot garden ornament in my aquarium, I drilled holes in the top to make a bubbler feature. Before adding it to the tank I kept it in a bucket of water for a week to make sure it wasnt leaking anything or producing a film on the water and I also tested the PH to make sure it wasnt effecting that. Hope that helps. 0 Quote Share this post Link to post Share on other sites
ShawneeRiver 2,720 Posted November 3, 2013 (edited) Thanks for the happy birthdays guys It is a food safe glaze I believe but the bottom isn't isn't glazed (if the bottom is glazed it sticks to the kiln) and it isn't hollow, would sealing the bottom in aquarium sealant be an idea? I really hope I can put it in soon when I get my new sand in It sounds like it should be fine. You don't need to seal the bottom just because it wasn't glazed -- you would need to seal it if the piece was hollow. As long as it was fired to temp with food-safe glazes, it should be fine. Please post pictures!! I used to do pottery, and I'd love to see it! And HAPPY BIRTHDAY!!! Edited November 3, 2013 by ShawneeRiver 0 Quote Share this post Link to post Share on other sites
GoldenSpoiledRotten 6,786 Posted November 3, 2013 I actually disagree with not having to seal the bottom. Although clay can last in water for a very long time, it does still degrade. With all the crap they put in clay these days I would just seal it and not risk it. 0 Quote Share this post Link to post Share on other sites
dnalex 13,633 Posted November 12, 2013 I actually disagree with not having to seal the bottom. Although clay can last in water for a very long time, it does still degrade. With all the crap they put in clay these days I would just seal it and not risk it. Just out of curiosity, what kind of crap do they put in clay these days? Happy Birthday! I am sure everything will work out, and you can use your gift in the tank. That is so neat that your mom made you that. 0 Quote Share this post Link to post Share on other sites
GoldenSpoiledRotten 6,786 Posted November 12, 2013 dnalex, on 11 Nov 2013 - 11:52 PM, said: ChelseaM, on 03 Nov 2013 - 3:54 PM, said: I actually disagree with not having to seal the bottom. Although clay can last in water for a very long time, it does still degrade. With all the crap they put in clay these days I would just seal it and not risk it. Just out of curiosity, what kind of crap do they put in clay these days?Happy Birthday! I am sure everything will work out, and you can use your gift in the tank. That is so neat that your mom made you that. Whiteners, silicates, bits of glass, oxide compounds, etc. depending on what it is that you are using clay, slip, and glaze-wise. A quick trip to Continental Clay's website will show you a comprehensive list. I believe that is where my pottery teacher bought from. 0 Quote Share this post Link to post Share on other sites
sonny.barile 111 Posted November 16, 2013 dont forget sulphur..... 0 Quote Share this post Link to post Share on other sites