switch wire from storage tank?

[mrimike]

I purchased a 500 gallon storage tank and was curious how you typically would install the switches for a clean exit out of the top. Is it just a standard bulkhead fitting I run the switch wires out from or should I use some grey elec conduit... ideas? thanks here is my tank and the fittings.. top is 1.25 for well pump in and the bottom is for water out
I will have 2 float switches one for well pump (down position on) and one for booster pump safety cutoff (down position off) and I bought the weights for each one so they can just hang at whatever adjusted depth i need

 

[Valveman]

To attach the float switches I use a bucket with a pipe sticking out and a little concrete to hold it down. Like in this drawing.