Fishpen operators at Laguna de Bay yesterday urged the Government to open throughout the year the gates of the Napindan Hydraulic Control Structure (NHCS) to allow the entry of salt water which, they claim, is "essential for higher fish growth and productivity" in the lake. The fishpen owners, who are members of the Chamber of Lguna Lake Fishpen Operators, Inc., claim that the "continued closure" of the NHCS's gates could spell the doom of the once highly profitable multi-billion-peso fishpen industry.

Estepa, L. (1990, March 28). Fishpen operators urge Napindan gates' opening. Philippines Journal, p. 13.