Outdoor Propagation

[jojo22]

Yeah I know aluminum can not rust persay as it has very low to no iron content in it but the oxide buffer is a form of corrosion. It is caused by the detereoration of the aluminum at the molecular level. Aluminum oxide can not form without the presence of aluminum which stand to reason that this oxide is coming from within the aluminum so I guess in essence deterioration would be a better term. But I was just trying to keep things simple.

I personally would not let any metal besides titanium have prolonged exposure to my tank water as most metals will leach contaminats into your water. Also I have seen a DIY titanium heat exchanger somewhere I think I may remember where. If I can find it again I will post a link for you. Have you considered the possibility of geothermal heat stability???

[Fatman]

Yeah I know aluminum can not rust persay as it has very low to no iron content in it but the oxide buffer is a form of corrosion. It is caused by the detereoration of the aluminum at the molecular level. Aluminum oxide can not form without the presence of aluminum which stand to reason that this oxide is coming from within the aluminum so I guess in essence deterioration would be a better term. But I was just trying to keep things simple.

I personally would not let any metal besides titanium have prolonged exposure to my tank water as most metals will leach contaminats into your water. Also I have seen a DIY titanium heat exchanger somewhere I think I may remember where. If I can find it again I will post a link for you. Have you considered the possibility of geothermal heat stability???

My understanding of geothermal heat stability is using the ground water as a cool in its own closed loop, and running it through the tank water without cross contamination. Problem is I live in Miami, FL and we have water at 10ft , meaning its extremely warm and not really a viable option especially for the summer months.

The reason I was considering the in house cooling was because of the airconditioning I run(everyone does) to keep the house between 70 to 75'.
Thus its energy that im using anyways to cool water.