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4dKH solution.

Joined
26 Oct 2008
Messages
1,647
Location
Cheshire
Gang@Ukaps

Could somebody please explain what is so special about this solution and what are the ingredients that this solution is made of.

Regards
Paul.
 

George Farmer

Founder
UKAPS Team
Joined
30 Jun 2007
Messages
7,083
Location
Cambridgeshire
Hi Paul

You fill a CO2 drop checker with 4dKH solution and pH reagent. This then goes green with 30ppm. More CO2, it goes yellow, less it goes blue.

This explains more... http://www.ukaps.org/drop-checker.htm

Making your own solution is relatively simple, or you can buy it from Aqua Essentials or The Green Machine. 1 bottle will last years.
 

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