Aquarium Advice - Aquarium Forum Community - View Single Post - How to make a reference KH solution for CO2 measurement

brutus · 08-15-2008, 12:44 PM

if drop checker changes colour from blue to green when co2 at right level in tank why put 4 kh souluton in it if tank water is 5 kh ? wont that give me false reading?

08-15-2008, 12:44 PM	#36
brutus Aquarium Advice Freak Join Date: Jun 2008 Posts: 428	if drop checker changes colour from blue to green when co2 at right level in tank why put 4 kh souluton in it if tank water is 5 kh ? wont that give me false reading?