Copper fittings with aquarium piping.

I'd like to use a copper elbow on the clear plastic hose going in and out of the canister filter, my question is, could I use copper in a fish tank without any water problems? Both pieces will be outside, but the water will be passing through them.
ibr:

Per previous posts the copper will probably work with PVC pipes but
"why are we even discussing this issue"?

The cost of a 90D PVC bend is nothing and if for some reason (which neither you nor I can anticipate) the copper elbow becomes sacrificial .....!

TR
 
The leakage is not really a concern, it is a pretty tight fit, clamped and tightened by stainless steel clamps.

Either way, I've stopped at Lowes today and picked up a bunch of 3/4" pvc fittings with a 1/2" pipe (yes Home Depot did not have anything smaller than 1-1/4"). The intake and output nozzle are already made, I'll post pics of everything when I paint it.

Thanks for everyone's comments.
 
There is a diffenence between short term exposure to copper and long term.

Having copper fittings/piping in your house isn't a big deal. By the time you flush and bring to temp the water, what minute copper may be there is gone.

However, having it in your filtration lines to a closed system such as your tank, can give issue for later on for inverts.

Yep, especially if the pH is below 7 (acidic).
 
Not everyone has inverts in their tanks :X

True but if you want to add some later on the road or decide to convert your tank into a shrimp breeding tank your pretty much out of luck. I think the glass and silicone absorb the copper making the tank useless for inverts. I always ask if copper or copper based meds have ever been used before I buy any used aquariums.
 
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Now that would be a good experiment for those that hate snails. Put one elbow on and see if it really will kill all the snails. Perfect for those that NEVER want snails or any inverts again. I personally doubt that one fitting on a tank bigger than 25 gallons would kill anything, but I have been known to be wrong....:grinyes:
 
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