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
Daddynobucks Reviewed by Daddynobucks on . 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