Pros and cons for loading Totem Forest

Just out of curiosity - how and why does lead affect resale if it is removed?

Incidentally, on someone's suggestion, rather than sand (which tends to attract moisture) I used kitty litter to load my Forests. Don't laugh - it smells nice, does not contain or attract moisture, and can easily be poured/ vacuumed out at sale time. I was able to get maybe 7-8 pounds in each speaker. It did tighten the bass.

Don S - I stand corrected on deliquescence. I should have just said that much of the sand I have bought for projects has been really wet. In light of my newly acquired knowledge, I will clarify that the moisture must have been between the sand particles rather than actually within them. Wherever that moisture resided, it seemed to be better not to introduce it into my speaker enclosure. The kitty litter seemed much easier to deal with IMO. As far as I am aware it has not attracted further water or swelled in any fashion. Hope that clarifies my answer.