If your tank is hot and you have no means of cooling on it put a fan on it get the air moving around my house is currently at 37c and all my tank has on it is a small fan and the water in my 33 gallon is at 28c fans do a great job of cooling tanks in a cheap way 
 
If you have cooling then as others suggested look elsewhere 
		
	
		
		
		
		
			
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				 My aquarium is nothing but a smorgasbord for my cats.....
			  
		
		
		
		
	
		
		
	
	
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