Has anyone had any exposure to fungal growths in thier plating line rinse tanks (especially after the acid cleaner). This hyphae is quite hearty and nothing seems to kill it. It is not an algae. I've even tried glutaraldehyde, a common antifoulant used in the metal finishing industry, to no avail. What does anybody say? Don Hoppe Jr. ZYCON [log in to unmask]