Will rust kill fish

Krawnik

Feeder Fish
MFK Member
Aug 8, 2009
324
0
0
Massachusetts
Good question.

If it's a pure iron nail, I don't think it would. Rust = iron oxide. Plant fertilizer has iron in it and is safe for fish. I suppose if you dumped a bunch of nails in it might overdose things, but I doubt dropping a nail in your tank would kill things off.
 

likestofish

Jack Dempsey
MFK Member
Sep 7, 2007
2,958
16
38
Duluth, GA
probably not but other heavy metals might
 

fisher12889

Jack Dempsey
MFK Member
May 21, 2006
2,521
0
36
Colorado
The driftwood in my tank has nails holding it to a board, and I've had the same piece in my tank for almost 10 years without problems.
 

SimonL

Fire Eel
MFK Member
Oct 23, 2005
3,213
9
68
Ontario, Canada
The old-school way of adding iron supplementation was burying iron nails in the gravel of planted tanks lol...also, as mentioned, driftwood is mostly held on with screws.
 
zoomed.com
hikariusa.com
aqaimports.com
Store