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We are lucky here in most areas of Florida becuase you can drive up and fill up like a gas station for chlorine or sodium hypochlorite.  Guys do not need to reaaly worry about getting fresh chlorine or paying high prices.  Chlorine goes for about $1 in the Tampa Bay area!

If you find that you are trying to transfer chemical up and onto your rig, we have many solutions to this kind of challenge. 

If you have an All-Flo pump, simply remove the hex plug (3/8" MPT) on the opposite side of the pump and attach another suction hose with a ball valve near the pump.  Most of the ones I assemble use a 25' suction hose in 3/4" with a slotted filter at the end.  Instead of pumping through 200' plus of chemical hose, remove the other hex plug on the top of the pump opposite to the one you are using.  Install another ball valve and usually between 12 to 25' of chemical hose in 3/4" with a ball valve installed at the end to turn off the flow when needed.

The All-Flo air diaphragm pump has a total of 4 ports.  The AFKE038B3 has two inlets and two outlets.  It gives the operator many more choices than the other AODD pumps.

Check out the diagram that my Mom designed.  It will give you a good idea or ideas on how to change up your rig to make it easier to transfer chemical up to the tank(s).