Where do you get the Iodine? I should probably do that.
The LFS. Or Big Al's. I use Kent Marine Iodine. It's sold as a supplement
for sal****er fishtanks.
Since you have such a large tank, you should add more than a drop with each
water change. Maybe half a capful. It doesn't take much. (The dose listed on
the bottle, which is much higher, should be safe, but since the stuff is kind
of pricey, why use more than necessary?)
Leigh
http://www.fortunecity.com/lavender/halloween/881/