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			 Hi Sumpfinfishe, 
		
	
		
		
		
		
		
	
		
		
	
	
	I've used it in the past but because it's so expensive, I switched to an algae concentrate that I got in the states. It was originally developed for the aquaculture industry, but take mix a product for the aquarium trade called "Tahiti" blend. It's extremely concentrated, and because the phyto is dead, you must feed sparingly. I've used it for a year and half now and found a lot more sponge growth, rotifers, and mysis shrimps in my tank. Here's the link if your interested http://www.instant-algae.com/ Regards, Terrance  |