Help Im Going Nuts

[chrisz]

HI have an inground pool about 10 yrs old.having problems with green sand in the pool.i have a hayward de filter and this yr. i replaced the top and bottom plates since they were cracked.my first question is does anyone know how to test a filter for leaks.topic 2 is 3 yrs ago i had a loop lock cover installed from a pool company.when they drilled the ancours for the cover they drilled thru my return lines in 3 different spots.called the company and they came back and repaired the pipes.my question is is that sand coming from the filter or is the repairs leaking.i realy dont want to dig the pipe up because its under blocks.or should i just stop crying and start digging. any answers would greatly be apreciated since im pulling my hair out.and by the way we have had a record heat wave on long island this summer!!

[quantumchromodynamics]

What is the model of your filter? Sand should not be coming from a DE filter. Are you sure it's a DE filter?

It would be unusual for a pressure pipe to suck in sand. Pressure pipes usually leak water out. However, there are rare occasions that a pressure leak can act like a venturi and suck in sand and dirt.

You could put a knee-hi stocking over the return to see if the sand is coming from the returns.

Do you have any green sand around your pool? Green sand is unusual. The green could be coming from copper. Have you used any copper algaecide? Do you have a heater? What type of pool is this, vinyl liner, fiberglass or concrete?