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Discussion Starter #1
I have CO2 drop checker reagent available if any one wants. Its available free of charge but if you can trade me for some plant cuttings or shrimp I would appreciate it.

Solution is 4 dKh with bromothymol blue pH indicator. Its similar to what you get from other vendors. Light green = 20-30 ppm CO2.

Pickup in Broomfield or Boulder area.
 
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