Pump / Motor Problems that can Lead to Green or Cloudy Water 

1.)         Your Pump Impeller is Plugged or Damaged. Which can occur by not having the handle on the basket still attached properly, letting debris fall into the pot when cleaning the basket, … or, because

2.)         Your Pump Basket is Split, Cracked or is Missing. (Which is often cause by having a Split, Cracked or is Missing skimmer basket, or one that lifts up and allows debris past it as well, or by a cleaning system puling in too much debris and splitting the basket, …)

3.)         Your motor windings are "partially fried", or the rotation has actually reversed due to inner shorts in the motor (Note: This is extremely rare.)

4.)         One more … Keep that pump lid O-ring cleaned and lubed on all sides. Pull it completely off, clean all contact O-ring contact points completely, and re-lube the O-ring completely on all sides with an appropriate lube. I prefer silicone lube to Teflon as it lasts longer. Just be sure it is lube and not sealant, or you are going to curse life.

These are usually accompanied by very low system pressures, melted baskets and melted fittings, pump leaks on both the suction and pressure sides, ... . Because of the difficulties involved with diagnosis, disassembly, cleaning and reassembly of most pumps, and many of the problems associated with these issues, it is often better to call a repair person at this point.