Using Aluminum Piping

[Problematic]

I found the plans to basically create a condenser out of aluminum pipe by running the pipe under ground, then back up and coiled in a 55 gallon drum in order to serve multiple purposes... 1) Draw humidity out of the air and collect the water 2) cool the air to run to a green house 3) cool down the water in the aquaponics system

However I haven't been able to find a ton of information on using aluminum in an aquaponics system other than that it can corrode? Does anyone have any warnings or information on why I shouldn't add about 40 feet of aluminum piping that water would circulate through??

[Rob Tolette]

Our general rule of thumb is to never use metal components in aquaponic plumbing.  For any parts that will interact with water that fish will live in, use food safe plastic, vinyl tubing, and PVC pipe/fittings.