This cheap submersible brushless 12v  19w dc-powered  circulation pump is able to lift 5m.  I can run it directly from a panel without using cc+battery. 
Anyone knows if it is running without pumping (no water) wether this will have a negative effect?? I can imagine it then works like a fan or not?
		
							
						
					Anyone knows if it is running without pumping (no water) wether this will have a negative effect?? I can imagine it then works like a fan or not?
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