Response to Thomas, Did you clean the fingers with a product like TSP before acid washing? If not, dirt and oil can be sealed inside of the cloth covering the fingers. Another possible cause for what you've described is particles in the water (cloudy water).

An image is worth 1,000 words! Add an image or two to your comment to help ensure it is understood accurately.

Yes, please email me exclusive discounts, swimming pool tips and helpful how to guides. This comment may be posted on a public site. Do not include: HTML, references to other retailers, pricing, personal information, or any profane, inflammatory language.