I am attempting to assemble my fleck 5600 and it came with 2 boxes of resin. I also ordered the Canpro-455 filtration cartridge. The boxes are labeled high efficiency and soft resin. I read somewhere that one of these resins acts like a gravel and needs to be placed at the bottom of the tank.
1. How much of each resin do I need to pour into my tank?
2. How much room should I leave from the top of the resin to the shoulder of the tank?
3. Does the Canpro-455 being installed affect how high I should pour the resin?
I suggest you contact your supplier for directions how to assemble the softener.
As a general comment--gravel is sometimes used and if used it is put in the bottom of the resin tank. The quantity of gravel is determined by the size of the resin tank.
The amount of resin used is determined by the size of the resin tank. There must be sufficient space above the resin to allow the resin bed to expand during backwash without washing resin out of the tank.
You supplier should have provided the correct amounts of gravel and resin but if you have doubts you should go back to the supplier to confirm the correct quantities.