With a submersible pump you can almost completely pump out the water in the pool. However, you should only use the submersible pump when the water is clean and clear.
Frequently asked questions for Submersible pumps:
All Steinbach and INTEX filter systems (sand filter systems, cartridge filter systems & filter pumps) are suitable for salt water as long as the salt content in the water is below 0.5 % (salt electrolysis). Before winterising, clean the filter system thoroughly with standard bathroom cleaner, clear tap water and a lint-free cloth.
All filter systems and filter pumps have a sound pressure level* of < 70 dB(A).
*The emission volume is comparable to a large household appliance.
If the pressure is too low, the pre-filter is dirty and the pump is not getting enough water. Clean the pre-filter and check the suction line and the water level.
If the sand is newly filled in, or the sand is already very fine due to the use of several seasons, small sand particles may still be present. The solution is to backwash several times until the water comes out clear, or to fill in new sand.