NT LABS Pond Barley Straw (2pcs) (long term algae remover)

When to use : Barley straw pouches are effective against green water algae and blanketweed, harmless to pets, wildlife and ponds. Each pouch will last estimated for 6 months How to use : Place on surface near moving water. Attach string and pull to surface twice monthly. Replace every 6 months, only remove old pouch one month after replacing with new to ensure continuous control. 1straw pouch treat 3500L , 2 straw pouch will treat 7000L