Insta-Test 3040-G High Range Phosphate Test Strips, 25 per Bottle above-ground-pump-filter or topside control

or topside control

📝 Note: For best results

this FloThru style heater supports reliable water heating performance in modern hot tub and spa applications

If your existing board has failed or your spa is experiencing control related issues

or safety shutdowns

Insta-Test 3040-G High Range Phosphate Test Strips, 25 per Bottle above-ground-pump-filter or topside controlInsta Test 3040 G High Range Phosphate Test Strips 25 Strips per Bottle Quickly and accurately check phosphate levels in your pool or spa water with the LaMotte Insta Test 3040 G High Range Phosphate Test Strips. Designed for fast results and easy use, these test strips provide reliable readings for phosphate concentrations, helping you maintain clean and clear water. Fast Results: Delivers phosphate readings in just 15 seconds for 0, 100, 200, 300,