Joshua Segatto wrote:Is there a metal that would be safe? While plastic piping would work (I've looked in to using like drip irrigation pipe which is super cheap), as Bryant pointed out, I don't think that the water would cool as quickly as if it were a metal pipe. Additonally, I don't think condensation would happen above ground either by using plastic pipe (point 1 of my original post)
Joshua Segatto wrote:According to everywhere I read... Copper piping is a huge no no in Aquaponics due to it poisoning the fish and because aquaponics water is acidic and will corrode it as well... so that's not an option.
David Croucher wrote:Naturally, this happens in water from limestone rocks, where calcium and magnesium increase the pH, lime coats the pipe inside and metal take-up is minimal. Do it yourself? Add soil-conditioner slaked lime in small amounts to the water - most any farmer will have some. Or throw some old mortar or concrete chunks into the tank.
Jim Fry wrote:I have no idea if this is true history/science, but it makes a good story. At one time aluminum was very valuable. It's was just so hard to mine and extract. But it was finally figured out and aluminum became a very cheap and widely used metal. Some folks believe it helped win the war against the National SOCIALIST German Workers Party (the scum nazi's) because the factories of our great American Republic were able to produce so many aircraft and the Allies were able to bomb the socialists into surrender. But, the use of aluminum had become so pervasive during the war effort, that there were great factories left idle after the war. So they (quite naturally) started building peacetime products. And thus everyone starting using aluminum pots and pans for cooking and as dinner ware, and as pizza pans. A couple decades later, Alzheimer's became prevalent. Some folks think there's a connection between "brain disease" and aluminum). I don't know if aluminum is a death metal or not, but I personally will not use it for anything not structural or electrical. Cast iron pans and glass glasses are much better when food and drinking is concerned. I wouldn't use aluminum if you or fish or plants are going to be drinking the water. It's not very permaculture like if you do the cost effective thing, but in the long run poison yourself (or the soil or the animals).
Joshua Segatto wrote: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??