Received this question on my website a few days ago. This is a new one for me. I don't think aluminium can change the Ph and have never noticed the Ph having any effect on the heat factor. Steve, I have a friend who swears that his peppers grown in an aluminium planter are hotter than those grown in regular planters? Something to do with the Ph of the soil. Any comments or confirmation? Thanks, Jim Pasadena, TX" -- Enjoy the heat, Uncle Steve ~+~+~+~+~+~+~+~+~+~+~+~+~+~+~ Uncle Steve's HOT Stuff Anything & Everything about Chiles http://usHOTstuff.com/ ~+~+~+~+~+~+~+~+~+~+~+~+~+~+~