I've just noticed 2 things that worry me - 
1 - around the edges of my filter output, there is something that resembles white mould...what is it, and is it dangerous?
2 - my very pregnant guppy's eyes have gone funny. She's normal in every other way, but the white of her eyes have darkened, and it looks like she only has 2 black circles for eyes.
Water parameters are - Ammonia 0, Nitrites 0, Nitrates 0, pH 7.2
PLEASE HELP!!!! 
 
				
			1 - around the edges of my filter output, there is something that resembles white mould...what is it, and is it dangerous?
2 - my very pregnant guppy's eyes have gone funny. She's normal in every other way, but the white of her eyes have darkened, and it looks like she only has 2 black circles for eyes.
Water parameters are - Ammonia 0, Nitrites 0, Nitrates 0, pH 7.2
PLEASE HELP!!!!
 
  
	             
 
		 
  
 
		 
 
		 
 
		 
  
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		