Copper Treated 20Gal Tank For Sump

I THINK I may have used copper treatment (Seachems Cupramine) on my 20gal tank, but for the life of me, I can't remember. If I did, it was one cycle and was about 4yrs ago. I took my 20gal down soon after to make room for my 65gal. I cleaned it good with water and vinegar before placing it into storage, where it's been for 4 yrs.

So my question is, if I did one cycle and it was over 4yrs ago and the tank has been sitting in storage for that long, do you think it's safe to use as a sump? Is there anything I can do to further clean it to make it safe? Thanks for any input.

 

I honestly do not think you have anything to worry about.

If you are seriously concerned have the LFS test for copper, and use Cuprisorb.

 

Ok, I actually have a Seachem copper test kit, so I'll probably just fill the tank and then test the water. Should I let it sit for a certain amount of time before testing?

 

I would let it sit for a short while (a day). Remember that copper values of 10 ppm are not unusual for NSW and really not considered an issue (based on who you listen to).

 

Ok, cool, thanks for the info.

 

I think you mean 10 ppb and not ppm? Dosage to treat for Ich is 0.5 ppm, so hopefully NSW doesn'y have 20 times that amount