I would say most of the peices are only slightly heavier than my base rock.
JBrown I live in Saranac Inn too, there is Tri Lakes Aquarium in Malone which is around 1hr 15 min away. They have a small selection but is decent priced, and all of mine have been healthy. Just be sure you know everyhting you need to know because the guy owner tells you many htings which are incorrect.
Then there is Bridge Street Aquarium in Plattsburg. Mainly a saltwater fish store, nice selection but jack up prices.
There is animal house pet shop too. All around petshop has small saltwater selection but has different fish then the normal one. Decent priced but you have to know what the fish requirements are etc. My favorite place for around here. Its also in Plattsburg.