[NATIVEVAMAN]

A lot of folks say "miracle muds" dont work because they cant "see" a difference in there tank.Even the above average and most studious aquarist doesnt have the means to test but for 4 or 5 of 40 or so most common trace elements.So I guess some of it has to be taken on faith.I dont see the use of these as the entire content of a dsb as being very practicle or needed,maybe 10 to 20% might be more resonable.Garf grundge has been used for years as one leg of the cure for "old tank syndrome"and it works.A warning about garf grundge,be prepared to bury it deeply in the sand bed as it is quite ugly.A 4 inch sanf bed seems to be just about the most workable depth.Even a 1 inch sand be will do some good for denitrification but it would lack the anaerobic layer that is so important.The article that Elliott sent by Rom Shimeck is the most recent and up to date.