Unlike algae iron deposits resist scrubbing and take a lot of elbow grease to remove.
													
																	Yellow stains in pool. 
									
	
		
	
																	I have a yellow stain as well and i know what caused it. 
																	It looks a lot like it would if you had mustard algae but when you brush it doesn t come off. 
																	I am stuck with two issues. 
																	I have a bunch of yellow staining on my pool liner. 
															
													
									
	
		
	
																	Sprinkle approximately 1 2 bag of suncoast stop stains over the same area. 
																	For more information download a copy of our complete pool care guide. 
																	I also forgot to switch the pump from auto to manual. 
																	If a yellow or reddish color occurs it is an indication that the stain is copper. 
															
													
									
	
		
	
																	Pool stains on the wall or floor of a swimming pool can be caused by metals in the pool water or by an organic material left in the pool. 
																	I have been slam ing for the past 10 days or so and the. 
																	Shades of yellow can be a sign of excessive iron. 
																	Pool steps can leave stains and rust on the finish and age can take a toll on the finish. 
															
													
									
	
		
	
																	So it only ran for 3 or 4 hours which may have helped to cause the problem. 
																	Iron can be introduced into a pool by well water or pipe corrosion somewhere in the pool system. 
																	I have read some other posts pertaining to this but still a bit confused on what to do. 
																	Our products are specifically formulated to identify and treat a variety of pool stains no matter the cause. 
															
													
									
	
		
	
																	Your first clue to diagnosing a pool stain is to check out it s color. 
																	The most common blemish however is usually fading caused by sun damage and tears caused by equipment or debris in the pool.