My understanding is that the temp has to be above 90 for added co2 to be effective. My room seldom gets above 85 (70 night-80 when lights on). Im using the sugar yeast method right now but wondering if im wasting my time and money because of my low room temp. Plants seem to be doing fine...3 HK and 3 bsg seed into 6th week of flower. Should I somehow raise the room temp? And if so, whats a safe method? Thanks.
co2 ?
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