Music credits go to:
Asher Fulero - Lukewarm Hazy -    • Video  
Dan Lebowitz - Don't Ya Bite Now -    • Video  

Just a quick video on the side since many asked about the propellers and the couplings. So I hope this clears things up a bit.
About cutting up the bilgepump: there are many many other videos out there so feel free to check that out.

Any further questions?
Check out my other ROV videos:

ROV Thruster Housing -    • ROV Thruster Housings DIY submarine S...  
ROV Lighting -    • SeaPerch ROV Lighting - DIY Submarine...  
ROV Controllers -    • ROV arcade and basic Controller Box -...  
ROV SeaPerch -    • Extreme SeaPerch ROV - DIY Submarine ...  
ROV Depth Gauge -    • Selfmade ROV DEPTH Gauge indicator Se...  
ROV Tether Projects -    • ROV Tether Projects Touch Muh Hull DIY  
ROV Wiring -    • Wiring your ROV controller step by st...