The Aquascape water treatment line is packaged to make dosing your pond extremely simple to calculate. Bottled water treatments, sized up to 500ml / 6.9oz., have an easy-dose pump bottle, just one pump for every 100 gallons. Larger bottle sizes have a pump top that treats 500 gallons with 1 pump, allowing faster dosing for larger ponds. This eliminates the need for the consumer to read the dosage rate of each label and/or get out a calculator each time they need to treat the pond.