No, in fact, the effect of a diffuser on habitat in Meliadine Lake is negligible. First, the area where the diffuser is located is not used by fishes (it is of low value to them). It is a very small area (approximately 0.04% of the total surface of the lake) that will be impacted compared to the overall area of the lake. Lastly, the water quality will not be an issue for fishes and it will continue to be safe to eat fish from Meliadine Lake.