Automatic Chlorinator for Above Ground and In-Ground Pools Off-Line 4.2 lbs

when I remove the cap to add tablets, water rushs out of the chlorinator. How do I stop this without isolating the chlorinator on each side???

Is there a wrench available to purchase to take the lid off of this chlorinator ?

Does this include everything in picture? How many feet of the black line is there and what is inside diameter of the black line???

do you sell replacement lids ??