@GOJIRADOR: My co2 level is around 20-30 ppm, I attach a picture with my co2 indicator View attachment 194944
@Nikos 1821 :Thanks a lot !
Today I made a new setup and soon I will post the first photo with it .
Ow what indicator is that.. Looks great.. I so far seen only CO2 checker whet you judge based on colour of 4dkh solution.. Which one is this..
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