After my first post, I purchased the TF100 and would like your opinion. I will not open my pool until May and wondered if it made sense to get sample results now. Circulation could be achieved by running a submersible pump from the deep end with the water discharged over the shallow end of the pool with a 2" fire hose. My reasoning is that I had algae for the first time prior to closing last September. Found the chlorinator outlet tubing plugged at the discharge fitting while away for two weeks. Was told by Leslie's to expect to drain the pool (due to their sample results shown on 1st post). I would hate to fill the remaining foot to be at the skimmer inlets only to have to drain it after sampling. Suggestions ?