Alleviate Stress Caused By Handling Neutralize Heavy Metals From Tap Water Great For Treating New Ponds Or Adding New Fish Pond Logic® Stress Reducer PLUS is designed to reduce fish stress and heal damaged tissue. Stress Reducer PLUS forms a beneficial slime coat replacing the natural secretion of slime that is lost when fish are handled, breeding or under stress. It also works to remove chlorine, chloramines and heavy metals making tap water safe. Stress Reducer PLUS is great for new ponds, during water changes or when adding new fish.