It probably means that you have no cya. This is actually pretty common upon opening a pool in the spring.

You need to lower your pH and alk as both are too high. Use some muriatic acid to drop the pH to around 7.0-7.2. In a pool this size, 12 oz. of acid should drop the pH by approximately 0.2. Don't put in a huge dose of acid all at once at try and get from 8.2 (or higher) down to 7.2 all in one dose. Add some acid, then wait awhile, retest and redose til you get it there. The acid will also lower your alk some. Then, aerate the water by turning the return jets upward to create splashing and bubbling on the surface. Aeration will gradually increase the pH without raising the alk. When the pH gets back up to around 7.6-7.8, repeat the process of lowering it back down to 7.0-7.2 and then aerate it back up. It may take several cycles of this to get your alk down to a better level -- 80-125.

Hope this helps.