LAKE TYLER — Hydrilla treatment in East Texas lakes isn't as harmful to the ecosystem as you think.

The leafy-floating plant is treated to maintain and control aquatic plants.

Fisherman have concerns whether the treatment is sucking oxygen out of the water and killing fish. Tyler State Park Lake District Fisheries Manager Richard Ott said that the treatment is not harming the ecosystem.

He also adds, "Well the Hydrilla itself is affecting the ecosystem, that's the reason the treatments are being conducted, so we can maintain access to the water all the way around, so that's why the treatments are being done out there."

Hydrilla is a fast-growing water weed that provides food and habitat.