DO NOT USE COPPER ANYWHERE (except wiring!).

[khyberkitsune]

FYI

I posted this thread after killing a strain of WW I had been enjoying for almost three years.

This was the result of "upgrading" the air delivery via a manifold made of 1/2" copper.

The cause of the loss was confirmed by the fertilizer supplier (GH) and several other sources.

The reason I posted this information was to help anyone else, as information on "banned" building materials for hydroponics is not easy to find.

In short, DO NOT USE COPPER FOR NUTRIENT DELIVERY OR AIR DELIVERY (if the copper is gonna be exposed to the soup).

For air delivery? Sir, most chrome-plated air manifolds are made of bronze, which is a copper alloy. Again, no problems.

And no etching, either. I don't cut my lines open, that's too expensive, we de-sweat a joint (silver solder) and run a fiber-optic camera down the lines to check for potential issues.

You don't just go cutting nilly-willy into a $150,000 system.

khyberkitsune Reviewed by khyberkitsune on 08-13-2010. DO NOT USE COPPER ANYWHERE (except wiring!). If you are, the copper can and will react with the fertilizer and will kill your plants. :mad: (I thought I was upgrading the plumbing too!) It took a few months for me to find the cause, but I found it. :thumbsup: Killed a nice strain of WW . :( Rating: 5

[tikiroom]

khyberkitsune a question for you. The copper tubing I used is the stuff you would buy for a refrigerator ice maker or water outlet. Does this tubing have the anti-corrosive additive that I need to worry about. I have not hooked up my homemade chiller yet, because of this thread. I don't want to stress them out anymore than I already have.

[Daddynobucks]

can you give some specifics on the untreated Cu, im assuming its ridgid and not coiled

also how many watt peltier chip do you think is needed to cool a 40 gal rez.

thanks/Daddy