Bioaccumulative behavior of THMs in my understanding is the chemical becomes infused throughout the pond ecosystem. Most everything gathers traces of the fat soluable chemical from the chemical absorbing plants and plankton and is passed to everything up the food chain that consumes the plants, algae and plankton. Contaminated organisms that don't get consumed die, decompose and the stable THMs are released to again to be recycled through the food web. Longer lived organisms continually accumulate amounts of the accumulative chemical as long as they live or are consumers. Consumed fat soluable chemicals deposit in each organism and build up over time since they are not passed through the digestive tract like many other water soluable chemicals.
The repeated chemicalization of a pond is why I would never buy a second hand water body unless I performed some sort of sediment and residual chemical survey. Why buy someone elses chemical dump?
Last edited by Bill Cody; 02/20/09 11:13 PM.
