Tomorrow is put up day & my son said we are doing it rain or shine, ha ha. I'm sure he will change his mind but I'm declaring no rain!! I went to town today & bought 4 gallons of liquid chlorine 10% for $13.30. Walmart's bleach is $2.94 for 121 oz-not sure if any of you caught that yet, but the big bottles of grocery store bleach are no longer a full gallon. I figured that out to be $12.43 for 4 gallons unit price 8.25% bleach. Leslie's was a dollar cheaper plus WalMart's liquid chlorine was 12 % at roughly same price per gallon but I was on a time schedule today due to air man coming out (yay) so I stayed close to where I was shopping instead of going into several stores/driving a few miles around town. I didn't get CYA b/c of someone telling me I wouldn't need it until I receive my T-100 test kit anyway, which is due to arrive on the 19th. So.....do I need anything else to start? And when should I add the bleach? It's going to take a while to fill so do I wait until half full, all the way full, or add from the get go? We are supposed to have scattered T-storms for the next few days so will that impact when to add bleach? Thanks in advance!!