Pool Filter Problems
Items needed to get rid of bugs in the filter or water in a pool:
For A Sand Filter With Sand and DE - Liquid Muriatic Acid (Hydrochloric Acid) or Acid Magic (Muriatice Acid Replacement)
For A Sand Filter With GlassPack Filter Media...
If filter media is getting into the pool, it means there is a broken part in the filter. In a sand filter it will be the laterals and in a DE filter it is the grids. Have the filter repaired by a qualified pool professional.
There are a couple reasons for pressure not rising in a sand filter:
Filter Media Is "Channeled"
Filter Media Not Catching Particles
1) If the filter media has gotten clumpy and has "channels" running through it where to water flows...