I have always had dificulty in previouse years with the bloom. Over 10 years I have added 30 tons of lime, 10 tons every 3 years or so. I have not had the water checked for N, P or K. I have read a little about this, great article in PB magazine a few years back about the Limiting factor but cant say I understand it well. I only used about 1Qt of the captain in a sprayer with 3 gallons of water and sprayed the lakes edge about 15 days ago. Never seen clear water like I got now. I would love to send off a water sample, any suggestions on who to send it to. Maybe my local county extension office can do this. Any other advice? Thanks