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Re: [APD] CO2 drop checker

Stuart Halliday wrote:
> I got mine a month ago from a UK retailer and it had the worse sort of 
> instructions included. ie a colour chart and nothing else.

Just curious to hear from anyone who actually has this. Is the green 
color a dark green, or a bright green (i.e., is there a noticeable 
contrast difference)? I ask because the difference between bright green 
and yellow is non-existent for about 10% of us males. Thanks.

Jerry Baker
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Aquatic-Plants at actwin_com