First off hello everybody.

Pool: In ground, concrete lined
Capacity: 50,000 liters
Filter: Sand (not sure of make)
Test Kit: DPD/Phenol tabs for chloring/ph + dip sticks (best i've got)
Local Water: Hard

When I opened it up:
Having taken the winter cover off (just a leaf cover really) the pool is green. When I first did this the water was pretty clear but there looked to be green algae on the bottom. Since I netted out some leaves etc a couple of weeks ago the water has been green. The pump has been running 24/7 since. Currently I can see about 3 steps down into the water.

1 week ago:
After testing the water about 1 week ago the pH was off the scale (over 8.2). Over the period of a few days I added about 4kg of ph minus (i think it is Sodium Bisulphate). Until the pH was down to 7.6. I've been backwashing every other day or so to stop the filter getting clogged.

Last night:
With the pH now at 7.6 last night i added 20 litres of 14-15% Sodium Hypochlorite.

This morning:
I was expecting the pool to be nice and milky this morning (dead algae) but it doesn't look much different.

Am i being impatient or am I doing something wrong? Any advice much appreciated.