My Dad is converting his pool and we have an issue that I can't comprehend... His pool is 18x33x48 and he has been using the ool calculator to determine his amout of bleach to add... He is using the TF100 test kit, and from what I gather, he is testing correctly for FC's... Here's the confusing part... When he tested tonight, he got 13 for his FC's... He put the amount that the calculator said and tested 1 hr later.. His FC level ROSE to 17... I had him retest with me on the phone and it had dropped to 16.5...Now... If he has all his levels right (Gallons and bottle size) WHY would the FC's RISE??? I am TOTALLY Blown away by this... Any ideas?? Today marks 1 week on the conversion and his water SPARKLES!!! He's using a Hayward Sand filter and as stated above 18x33x4ft... His actual water depth is 3'10.5"... He has been using OVAL on the calculator but I think it should be RECTANGLUAR, but when checking, it really doesn't change all THAT much... Again, Any ideas?????
HELP!!!
HELP!!!