![]()  | 
	
		
			
  | 
||||||||
| Portal | PhotoPost Gallery | Register | Blogs | FAQ | Members List | Calendar | Search | Today's Posts | Mark Forums Read | 
| 
		 | 
	Thread Tools | Display Modes | 
| 
		 
			 
			#4  
			
			
			
			
			
		 
		
		
	 | 
|||||
		
		
  | 
|||||
| 
	
	
		
			
			 I think any light will promote algae growth over time if you have nitrate issues as well.  Obviously MH more than Actinics.  But if you have actinics on for almost 12hrs/day, I would definitely consider it a factor in HA.   
		
	
		
		
		
		
			You should get a timer and limit how long you have them on for. No worries. 
				__________________ 
		
		
		
		
	
		
		
	
	
	Gary Tank was up for 7yrs and 10months. Thanks Everyone! 2016/2017 180Gallon Build Coming Soon...  | 
| Thread Tools | |
| Display Modes | |
		
  | 
	
		
  |