Prestone Driveway Heat impurities??

VaderWS6

New member
I started using Prestone Driveway Heat as my CaCl mixture, and a brown substance has settled to the bottom of the jug! I saw in Randy's article that the Prestone stuff was pure, but what is this brown crap? Hopefully I'm not poisoning my reefs.... :(
 

Paintbug

New member
i use Heat myself. i mixed mine in a gallon jug, and its as clear as day 1. i know of a few others here that have used it with no problems reported. sounds like your impurities are coming from somewhere else. like the water or the jug itself.
 

keebler1

New member
I too had the stuff at the bottom. I just treated it like Kalk and didnt use the last 1/4" or so of the gallon. My tank so far has been very happy and I have noted no ill effects. I am now on my third gallon and I guess I started it some time in early December/late November.
 

VaderWS6

New member
Just got a reply from Randy Holmes-Farley, and he said it was probably just leftover iron oxide. :)
 

Tava176

New member
Mine has always been clear too. I do not have an RO/DI system, so I spent the $0.65 on a gallon of purified water when I make mine.
 
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