This all-season dry pond bacteria comes in a no-mess tablet form. Each tablet is 1 oz. and treats 1,000 gallons of pond water. Simply throw these dissolvable pond bacteria tablets into your pond and it will sink to the bottom and start to dissovle. These tablets remove the hassle of mixing bacteria in a bucket or trying to sprinke some into the pond skimmer box. -Reduces toxic ammonia and nitrite -Reduces murky water caused by organic waste -Reduces problem-causing nitrate and phosphate -100% effective, contains five species of beneficial bacteria -Safe for pond fish, plants, birds and the environment Pond Bacteria Dissolvable Blocks 24 Tablets Pond Bacteria Dissolvable Blocks 100 Count Pond Bacteria Dissolvable Blocks 400 Count 25lbs. Pail ponddepot@msn.com Copyright - All World Rights Reserved Pond bacteria, Pond Kits and Pondless Waterfall kits, Filter Pads, Underwater Pond Lights. pump replacements and pond algae control. Pond Depot provides excellent technical assistance and fast shipping for all orders. The staff at Pond Depot are highly trained and experienced in installing and maintaining ponds. We will gladly answer any questions that you have. Pond Depot your online pond superstore!