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Discussion Starter · #1 ·
I'm considering coating some driftwood with polyurethane varnish.

Questions:

1. Is it safe for fish and plants?
2. If it waterproofs the wood, will I need to hold it down with an anchor (rocks)?
3. Which varnish should I buy?

Thanks
 

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Discussion Starter · #3 ·
Thanks I did google and got a few of these links. Perhaps I should've asked if anyone here has actually tried it.
 

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Anti iwagumi
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why do you want to coat the wood? it wont sink if youre blocking water from seeping into it. preserving it would b good for decorating around the house purposes but not for your fish tank.
 

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why do you want to coat the wood? it wont sink if youre blocking water from seeping into it. preserving it would b good for decorating around the house purposes but not for your fish tank.
Unless it's a type of soft wood which rots inside the tank. :D
 

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Discussion Starter · #7 ·
Yeah I'm aware that it probably won't sink. I can simply bolt the wood to a slate base or tie to rocks.

The wood is grapewood (=softwood?), but I understand it rots quicker than most woods and is susceptible to fungus growth. I really want to use the piece though because it looks perfect for my aquarium...thats why I'm considering coating it.
 
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