koiguy1969
GIGGETY-GIGGETY!!
clays allow for nutrient exchamge. zeolite is the most effective. zeolite absorbs ammonia and keeps it. the ammonias it absorbs are no longer available to be broken down to nitrites and nitrates...there goes some of the food source for the alge. if you buy the whitish "laboratory quality" zeolite for aquarium use you can soak it in a strong saltwater solution for 24 hours to rejuvenate it. the soaking draws out the ammonias, then a good rinsing...its ready to go again...