ข้อแตกต่างการใช้งานระหว่าง กรดเกลือ 35% หรือ กรด Hydrocloric 35% กับ pH Minor และ Sodium Bisulfate

If your Laswim EC Series salt chlorinator displays E5, the salt concentration is too low, but you shouldn't add salt by the bag. This guide explains how to test the actual salt level, the formula for calculating salt by pool volume, a quick reference table, and the manual's steps for adding salt to reach the normal level of 3,500 ppm without overdosing.

Why You Should Never Use Exposed Aggregate (Washed Sand Finish) Inside a Swimming Pool Using exposed aggregate or washed sand finish inside the pool is strongly discouraged because chlorine and pool chemicals gradually erode the surface, causing sand particles to loosen and detach. These particles are then carried by the water flow into the filtration system, where they often get stuck in the pump impeller, leading to wear, reduced performance, and costly pump damage. Additionally, exposed aggregate surfaces retain algae, are difficult to clean, and the rough texture may cause scratches or abrasions to swimmers. As the surface deteriorates, loose particles make the pool water cloudy and increase the frequency of maintenance, driving up long-term operating costs. ✅ Recommendation

A flashing Inspect Cell light on a Hayward AquaRite 900 is a signal to inspect the cell. It may be time for a scheduled inspection, or the unit has detected reduced cell efficiency, but it does not mean the cell must be replaced. This guide covers 3 checks, including the Turbo Cell setting and scale inspection, and how to reset the warning with the Diagnostic button.