fig1 is a perspective view of the outside of this device 10 with all external fittings , monitoring equipment and access to various points to add chemicals . the device 10 rests on a base 19 . an exterior shell covers the interior workings of this particular device . it is anticipated that the choice of materials used in the construction of the device will be plastic . the device 10 will rest on a base 19 preferably out of view from the pool user and in close proximity to the pool filtering equipment . on the exterior surface of the shell are three lines : the intake 17 , the outlet 25 and the drain line 18 . this device allows the addition of chemicals after the water has passed through the filtering equipment 64 . water travels from the pool via the main drain line 61 and skimmer port lines 62 to the pool pump 63 . the pump 63 forces the water through the main filtering equipment 64 of the pool . the water then flows through this device 10 by means of the intake 17 and piping 68 from the filtering equipment and allows the monitoring of chemical levels via remote sensors 70 located at predetermined locations in the pool — as well as the addition of chemicals , if needed . the water exits the unit through the outlet 25 and is allowed to reenter the pool through the piping 65 for that purpose . a drain line 67 is provided from the filtering equipment 64 as well as the drain outlet of the device 18 to allow the water to be drained , if needed . the outlet 25 from the device directs the monitored water and possibly water that is mixed with chemicals into the pool . if chemicals are added after that cycle is complete the remaining water left in the mixing chamber is drained out of the system via the drain line 18 and connected to the drain line from the pool filtering equipment 67 . a monitor 15 and keypad 16 on the outside of the shell to monitor the chemical levels and let the owner decide the day and time of the week to add granulated chlorine to the pool is provided . a moisture collector 14 , which is probably a packet of desiccation material that is commonly found in the prior art , is placed in a cavity adjacent to the granulated chlorine chamber and is used to absorb moisture so that the chlorine does not harden within the chamber 13 . the moisture collector cavity 14 is located slightly above the monitor 15 and keypad 16 and is accessible from the outside of the device to change the packet of drying material . on the top of the device is a lid for the granulated chlorine 6 and a lid for liquid chlorine 7 and the other chemicals 12 . beneath the respective lids are the granulated chlorine chamber 13 and the liquid chlorine chamber 30 and other chemical chambers 28 . each of the chambers is separate from each other . granulated chlorine is inserted into the chlorine chamber 13 and converted into a liquid when it is mixed with the pool water as it enters the device via the intake line 17 . liquid chlorine is inserted into chlorine chamber 30 and can be injected at any time into the discharge line 25 to the pool . the chemical chambers 28 are used to release various other chemicals into the pool . other chemicals may include acid , buffers or chemicals to impede scaling . fig2 is a cross sectional view of the device and shows the interior parts of this unit , including the chlorine chambers 13 , 30 . the granulated chlorine chamber 13 is connected at the top or first end to the granulated chlorine chamber lid 6 . at the bottom of the granulated chlorine chamber 13 is a valve , 22 , which allows granulated chlorine to pass from the holding chamber 13 to the mixing chamber 21 . a vibrator 40 is provided to assist the granulated chlorine to travel into the mixing chamber 21 through the valve 22 . pool water enters the mixing chamber 21 and allows the granulated chlorine to be appropriately mixed prior to entering the pool . the mixing chamber 21 allows the granulated chlorine to be mixed with the water from the filter and distributed into the pool first through a valve 81 and through the outlet line 25 to the pool . the liquid chlorine chamber 30 is connected at the top or first end of the liquid chlorine lid 7 . at the bottom of the liquid chlorine chamber 30 is a valve 80 , which allows liquid chlorine to be injected directly into the pool water through line 25 . in addition , other valves 26 in the chemical chambers 28 may also let other chemicals to be mixed into the pool water and enter the pool via the outlet line 25 from this device . after the chlorinating cycle is complete the mixing chamber 21 needs to be emptied of the remaining water . at the bottom of the mixing chamber a valve 27 is positioned to empty the contents of the mixing chamber 21 . a small pump 24 with an appropriate power source is provided to empty the mixing chamber contents through a discharge line 18 . a power source to operate the vibrator 40 on the granulated chlorine chamber , chemical mixing valves 26 , 80 , pump 24 and valves 27 , 22 , 81 is also provided . the power source is likely to be alternating current 25 but may be a plurality of batteries as well . an appropriate controller 23 as well as all necessary electrical connections is provided to monitor the chemical levels and control distribution of the chemicals and the flow of water through the system is provided . it is contemplated that the device 10 will be made out of non - corrosive durable material such as hard plastic . the shell should be constructed so that the interior contents of the device are well protected . other materials may be used depending on the cost of the particular material . fig3 represents the pool chemical monitor , which administers only granulated chlorine into a pool . the monitoring key pad and timer , 15 , 16 are identical to the first embodiment . an access 1 to the chlorine chamber 3 is provided as well as a moisture collector 37 . water enters the device through the intake line 33 and a valve ( not depicted ) controls the distribution of granulated chlorine into the mixing chamber 32 . the chlorine is mixed and then exits the device to return to the pool through the outlet line 34 . because the contents of the mixing chamber 32 need to be emptied a valve 43 with a pump 36 has been installed for that purpose . it is anticipated that a pump 36 is used to empty the contents of the mixing chamber 32 through the discharge line 35 . an appropriate controller 38 to let granulated chlorine enter the pool at a pre - determined time is also provided as well as all needed electrical connections . this unit is also powered by alternating electrical current 20 but direct current may be used in certain circumstances . an access panel 31 allows the user of the device to obtain access to the inner workings of the device .