Hi there! We're new to pool ownership and maintenance, but have been successful our first 3 months using the BBB method. We test our pool once a week (or more if we use it more). We've been able to maintain relatively perfect levels until about 2 days ago. After lots of use with family and friends visiting, we had 2 days of heavy rainfall and today we woke up to a greenish/yellow cloudy pool. This has taken us aback as we have had the most gorgeous clear water for almost 3 months. I checked our levels and the chlorine was a little low, but the acid and alkalinity were normal. We noticed a lot of yellow "stuff" on the bottom of our pool...after reading up on Mustard Algae, we have decided it is likely pollen. So...we vacuumed the bottom, backwashed for 5 minutes, added fresh water, and added the chlorine, muriatic acid and baking soda that our test indicated. I am hoping this clears things up.
We do have a few questions though...
1. Should we have put conditioner into the pool again? We put it in when we first filled the pool, but we aren't really sure how often this needs to be added.
2. Would something as simple as a pool cover have prevented this? It has rained before and rained a lot, but this is the first time our water has ever gone yucky!
Any insight would be appreciated