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			 im going to build a new sump and am considering an auto top off this time to make life easier but i havent actually seen one functioning and was wondering if someone could give me a step by step or pic by pic on the system and how it works 
		
	
		
		
		
		
			
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	110 gallon mixed reef with 77 gallon sump/frag tank  | 
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			#2  
			
			
			
			
			
		 
		
		
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			 ATO will make your life better. 
		
	
		
		
		
		
		
	
		
		
	
	
	period. set up is easy, I use a tunze osmolator. no drilling required, all you do is mount the infrared sensor at the appropriate level and then put the pump into some r/o water with the return also mounted in your tank and your off... aside from my aquacontroller, best piece of equipment I have ever bought.  | 
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			#3  
			
			
			
			
			
		 
		
		
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			 I use the JBJ one and IMO is one of the more important pieces of equipment on a tank. Keeps everything stable, keep water level the same for your skimmer, ect.  
		
	
		
		
		
		
		
	
		
		
	
	
	Mine is as simple as having the float valves in the sump at the level I want the water and then a 30G garbage can behind my stand. RO water that is pumped into the sump through tubing with a maxijet 1200 when the float valve trips. Thats it. I fill up the garbage can about once every week and a half or so. I tend to just top it off randomly but it nice not to have to worry about top off water all the time.  | 
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			 Once you use a good ATO, you'll wonder how you ever got by without one. 
		
	
		
		
		
		
		
	
		
		
	
	
	I use an Osmolator.  | 
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			#5  
			
			
			
			
			
		 
		
		
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			 After now having one can't see now going without. 
		
	
		
		
		
		
		
	
		
		
	
	
	I'm just using a humidifier float valve from HD, mounted on a bracket attached diagonally in the corner of the sump so I wouldn't have to drill the side. Though I'm using the float valve connected directly to my ro/di (no TDS creep btw) it could just as easily be hooked up to a storage container above the sump. ![]()  | 
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			#6  
			
			
			
			
			
		 
		
		
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			 after reading these posts I think I've got to get a ato unit instead of manually doing it. For some reason I always thought it would be more complicated to set up. 
		
	
		
		
		
		
			
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	RSM 250. Clownfish, Fox face, Blue tang, Yellow tang, Kole tang, Clown tang, Coral beauty angel, French Angel, splendid dottyback. CUC, softies, lps, sps.  | 
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			#7  
			
			
			
			
			
		 
		
		
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			 If you build or buy be very carefull.  There are lots of horror stories on nano-reef.com where ATO have killed the tanks.   
		
	
		
		
		
		
			
		
		
		
		
	
		
		
	
	
	A good one is invaluable I'm sure but if not built correctly a turbo snail can kill your reef.  | 
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			#8  
			
			
			
			
			
		 
		
		
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			 Osmolater is the way to go... 
		
	
		
		
		
		
		
	
		
		
	
	
	If it runs for more than 5 minutes it shuts down. There's also a high water level alarm built in. RC  | 
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			#9  
			
			
			
			
			
		 
		
		
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			 I use a cheap gravity fed pond float, Kent makes one and I think similar is available from other places, it goes in your sump and total cost was under $30.  I've been using the same one for years. 
		
	
		
		
		
		
		
	
		
		
	
	
	Douglas  | 
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			#10  
			
			
			
			
			
		 
		
		
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			 i definately want to get one but i dont understand how they work still, sometimes im just to dense i guess lol 
		
	
		
		
		
		
			
				__________________ 
		
		
		
		
	
		
		
	
	
	110 gallon mixed reef with 77 gallon sump/frag tank  |