How far have they gone with their breeding efforts?
http

/bettysplendens.com/articles/page.imp?articleid=833
BC 1972/73 Best Article in FLARE
IBC 1974 Betta Man of the Year
IBC 2004 Betta Person of the Year
IBC 2004 Congressional Award of Merit
IBC Top 10 Breeder 2003/2004
C2 Pastel Single Tail Male 2003/2004 and 2002/2003
E8 Marble Single Tail Female 2002/2003
"BettySplendens: How often do you have to change the water?
Jim: Jar water gets changed 100% twice each week."
How long have they been breeding?
http

/bettysplendens.com/articles/page.imp?articleid=863
"over 50 years experience under his belt. Phil recently recorded his 3,206th successful spawn, and is still going strong!"
"BettySplendens: How often do you have to change the water in jars?
Phil: I use beanie baby containers that hold 1/2 gallon of water. These must be 100% completely changed every third day."
Betty Splendens herself is well known around here, she is an exceptional breeder who sells some excellent fish;
http

/bettysplendens.com/articles/page.imp?articleid=718
"Make sure your betta is kept clean. A betta stirring up his own feces as he swims is just disgusting. Half-gallon containers will have to be changed twice a week. Gallon containers can go as far as once a week, and the larger the container, the longer the interval between changings. If the betta is kept in a 5+ gallon container with adequate filtration, normal tank maintenance of once a month or so is fine. Of course, if you see an accumulation of uneaten food, you should change his water sooner."
These are breeders. Award winning, long term breeders.