Allegations that government inaction in cleaning up the harbour contributed to the red tide crisis were rejected yesterday. Acting assistant director of the Agriculture and Fisheries Department, Sham Chun-hung, told the City Forum efforts had been made to improve the water quality at Tolo Harbour as the population expanded. The quality of the water had improved as a result, he said. Mr Sham said the Government would raise the question of pollutants flowing in from the mainland at a meeting with Guangdong authorities next month. During the forum, fishermen's representatives also challenged the Government on its failure to clean up the seabed.