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				01-23-2012, 05:14 PM
			
			
			
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			| Member |  |  | 
					Join Date: Mar 2010 Location: Edmonton Ab 
						Posts: 41
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	I keep the tank at 86 a little high for the koi but it was more of a test and they grew to fast there for sale as there now to big 120 for all three and a small black one i have a 90 gallon sump with 120 pounds of ceramic rings and about 2000 gph return and I do 3 30% water changes a week never test the water i use tap water right in to the tank and just add prime and have never had a problemQuote: 
	
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					Originally Posted by outacontrol  I am very surprised to see Koi and Discus together, I am very curious about this. What temperature do you keep the tank at? What about ph? What is the filtration and water change schedule? |  |