yes you should add sand. I use 6-8 inches from the top of the filter opening as a general rule of thumb. What brand/model filter do you have? If you know this you may be able to look up the owner's manual online.
yes you should add sand. I use 6-8 inches from the top of the filter opening as a general rule of thumb. What brand/model filter do you have? If you know this you may be able to look up the owner's manual online.
even at 10-12 inches you should be fine. IMHO sand should be flushed via backwashing...so I'm not quite sure why you are manually rinsing your sand, if I'm understanding correctly?
Given it's 3 years old replacing 200lbs will only cost you $10-$15...your choice, but IMO not needed. Good luck with the project.
even at 10-12 inches you should be fine. IMHO sand should be flushed via backwashing...so I'm not quite sure why you are manually rinsing your sand, if I'm understanding correctly?
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