HELP!!! Cloudy blue water

[PoolDoc]

Did you do the DE test on your filter?

High chlorine will help clear your pool, if there is still live algae. But if it's all dead, and simply being forced through your filter by the typical above-ground 'over-sized pump / under-sized filter' combo -- chlorine won't help clear the pool. (You STILL must maintain chlorine, to avoid growing a NEW crop of algae!)

Do the DE test. (#6 above)

[Divers3]

We just had a 27'x54" agp installed 2 1/2 weeks ago with a sand filter the pump is 2hp......our pool was filled with creek water since we live on a well....it's was brown at first now it's a cloudy blue and it's driving me nuts I have had the water tested numerous times and every time they say the water has the perfect chemistry!! I just had the water tested this past Friday and it was showing very low chlorine levels they believe something is eating up all the chlorine I put rapid shock in and added de to the skimmer basket and then woke up this morning after turning the filter off overnight and the bottom was a brownish color which we vacuumed and it stirred everything right back up I'm ready to give up I put 3 gallons of 8.25% bleach in and now you can start to see the bottom but its still cloudy..please help I'm desperate!!! ....we have a hayward sand filter 2hp pump 17,250 gallons of water ag pool.....here are the results from tf100

cya: 60
Ta: 100
FC: 19.5
Cc: .5
Tc: 20
Ph: 7.5
CH: 140
Now what??

[PoolDoc]

1. Do NOT turn the pump off till the pool is clear. (Why did you do that?)

2. What is "rapid shock"? Don't use it, till you've posted EXACT chemical name and BRAND name. Use bleach!

3. It sounds like you have a filtration problem, not an algae or chemistry problem. Post the EXACT model of your filter and pump (get the PUMP model, not the MOTOR model. Pump model number will be on the wet end of things, not on the motor.)

In most cases, a 2 HP pump is way, way too large for an AG pool sand filter. You may well simply be forcing the dirt through the filter!