What size tank is it? If you know the approximate location, then do what delemi says with the magnet. Otherwise, beware when you are reaching in your tank :shock:.
Where is the idea that rust is good for corals coming from? Any published research to back this up? Joker, glad you found and were able to remove the razor blade.
Don,
Could you expand on this statement please? Are you saying lack of iron is a limiting factor? I have one tank where my chaeto grows great and another where it struggles to survive and have been trying to figure out why.
talking about rust i have just took out my heater my 300W Titanium Aquarium Heater to give it a clean and i can not beleave how much rust is on it i am going back to my lfs and asking why it has gone like that
You have rust on a titanium heater? I had two in my tank for two years and they never rusted! They had coraline all over them but never rust. Isn't that kinda the idea?