First up: Big Lots bleach (which I bought 20 gallons of the other day) is no more than 3%....if its the Sno-EEE brand, you'll ntice that the ingredient legend does not give a percentage number....So the $1.30 you're paying is really not much of a deal after all....Walmart/ Aldi etc can probably give you a better deal overall...

Any how, if things are getting better in the water, you're well on your way..I'd keep the PPM's up, continue brushing and backwqshing as needed..as for me, my green water issue is turning out to be a metals issue....(THANK GOD I finally found that out)...

Sorry, but I cannot answer the question concerning the sump pump....BUT KEEP BLEACHING !!! a little improvement today will constantly improve over the next few days....You're getting there !!!! (I only wish I was so lucky)...