Swimfins said:You can soak it in a big tub of water and bleach. Probably a cup to 5 gallons. Soak it for hours or days, until when you rinse it the water runs clear. Finally soak it in water mixed with dechlorinator (as you use for water changes). Keep rinsing in fresh water. It might not sink, so you can use stainless steel nails, hammer on a tupperware top, and just bury the whole top under the substrate. If it still doesn't sink, you can use aquarium safe epoxy, paint it on the tupperware top, and cover it with some of your aquarium substrate. The additional weight of the glue and substrate should keep it down. It will match perfectly, and hopefully stop floating.
With the rocks, just scrub them with a mild bleach solution and soak them in dechlorinator and water.
Guy at the LFS told me how to sink driftwood using epoxy and tupperware. A good use for those old tupperware tops, that have long lost the containers!!
What an awesome idea!! I slightly modified the idea, using a metal baking sheet that I picked up at the dollar store. Its a crappy nonstick version so it should be safe in my tank. Pilfered a couple nails from the company bin (there's thousands, they won't miss 3). Total cost of weighing down an annoyingly floaty piece of wood = $1 plus tax. Thanks Swimfins
