Fighting Algae for months

[rkrgk]

Ok, I am planning to add 15 gallons to the pool in the evening. Hoping that its holding a bit with whatever I added yesterday afternoon(9 Gallons), fingers crossed...
And about the vacuum cleaner, I dont think I can bypass the filter (I have the DE filter) to vacuum to waste, Can I? And is it enough to just pick up something from the local Leslies? Or is there something which is better that I should look for? Appreciate your input..

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Its looks like I lost the battle the first day.
I came back from work and tested the pool and Cl is just 0.5 and pH is 8.0 (I had added 8.5 Gallons of Bleach yesterday), also had lowered the pH to 7.2 yesterday. But in my net skimmer (the one with the small spacing basket, there was a ton of clogged algae..

And to make things worse I can not find Great Value bleach in any of the Walmarts around here, so got the Clorox . It seems as though its 6% regular bleach.

So today I added 10 jugs (thats 14.2 Gallons) of Bleach. I will have to wait and see how it goes. Need to get more bleach tomorrow.
I have not backwashed the filter since a week, should I backwash everyday now? And after I backwash everytime do I need to add the same amount of DE?