 
 <prompt> ```Reattach di drain plug to di base of di tank. Pour new pool silica sand inside di tank. Fill di tank with water reach di level of di sand. Lubricate di O-ring for di valve with multipurpose lubricant. Reattach di multiport valve. Screw di collar and pipes back for place.``` <response>: Bifor you add any new sand to di tank, you go need to reattach di drain plug. Screw am back for di base of di tank, make you tight am well well so dat e no go dey leak. Put one corner of a bag of pool-grade silica filter sand on top of di mouth of di tank. Cut small small for di corner of di bag make sand dey fall inside di tank small small. Work carefully to make sure say sand no go pour. Repeat am until you don add di amount of sand wey you need for your filter. If you dey fear say you fit spoil di components inside di tank, add small water for di bottom of di tank before you pour in di new sand. Dis one go help to cushion di sand as e dey added but e fit misalign di standpipe. As you dey add sand, make sure say di standpipe for di center of di tank dey for di middle and e dey di right height. E go need to reattach to di base of di multiport valve when you don finish, so you fit line di two up to check if you dey unsure. Di amount of sand wey you need fit dey different for pool filters. Check for stickers along di side of di tank or for your tank manual to know how much your tank need to work. Use garden hose add water for di tank until e just dey cover di sand. Dis one go give di tank enough water to clean di sand and make di pump dey work before you start to filter your pool water. Find di rubber "O-ring" for di top of di multiport valve where e go form seal with di mouth of di tank. Apply small small lube for your finger and rub am around di O-ring. Dis one go make am easy to reattach di valve to di tank, and e go condition di rubber seal. If di O-ring dey spoil, you fit need to replace am instead of just lubricating am. Dem fit dey available for hardware and pool supply stores for di size wey you need. Remove di tape or plug from di top of di standpipe and position di multiport valve on top of am. Connect di opening for di valve to di top of di pipe, and push di valve firmly into di top of di tank. Wiggle am small small as you dey push am into place to make sure say e dey secure. Position di collar around di edge of di multiport valve and use di two bolts to tighten am into place. As you dey do am, dey alternate between bolts to make sure say di pressure dey equally distributed around di collar. Reattach di pipes and screw di unions tight tight to prevent leaks. 