Hello. I am a new pool owner. Just purchased a house a few moths ago and it came with a decent size underground pool. I have had a very helpful pool guy come by weekly for these first few months and he has actually been very forthcoming with information on how to maintain the pool. I have reduced his number of visits to once a month. After much time reading and learning pool chemistry basics, I think I am almost ready to completely take over my pool. I bought the TF-100 with Speedstir and it has been awesome being able to maintain my own pool and save money too! Just saying hi and hope to continue to learn from all the experts here in this forum! I still need to calculate my pool size and I know I saw a link here on how to do it. Anyways, thanks for all the great info that everyone is so willing to share.