What happens next in this paragraph?

How to change a well water filter
Note the filter brand.
The housing around your well water filter, or the filter itself, lists what brand your system is. If it's not on the housing of the filter, try checking the system itself.
Options:
-- To make sure that the unit fits into one of these spaces, turn it on and disconnect it. Check for a cartridge-pressure meter using a ruler and write your measurement in minute increments.
-- You'll need to know the brand name to ensure you get the right filter. Some common well water filtration system brands are whirlpool, reynolds, and culligan.
-- Most bodies of water feature different filters than low water filters. These systems use different amounts of water for different temperatures to warm the water properly.
-- If there is one in your home, it is probably a good idea to use a new one so you can improve water quality. The proper model is usually found by breaking down the sizes of the plastic forks when dealing with water quality, and see if the unit has a replacement filter.
You'll need to know the brand name to ensure you get the right filter. Some common well water filtration system brands are whirlpool, reynolds, and culligan.