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RH too low in indoor grow. Solutions?
TheGourmetWeedstarted grow question 4 years ago
I'm having a issue with my grow - RH won't go above 20%.
With a humidifier inside, full power. Temperatures are between 21 and 25c and I can only think the air extractor is taking too much air out of the grow, as in the night, with lights and fan off RH rise to +80%. Any ideas?
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occultgreen420answered grow question 4 years ago
absolutely you are right, just dim down the extractor and you will have the issue sorted. best way to go around it is to get yourself a grow room fan speed controller, something like the SM COM fan control and this has either the manual function or automatic one. Also consider spraying the plants and in this way you can add some foliage feed in the mix as well (i.e. Vita Race from Plagron)
One more thing...theoretically, the extractor fan has to work 24h...otherwise during the "night" you risk high humidity and mold in flowering stage. So maybe get a timer for the extractor as well so you can schedule it on/off when you desire, especially if you are working with CO2 suppliments as well.
CRiSPrGrowanswered grow question 4 years ago
hey there, Norweedgian , hodebra ! another great thing i discovered and started using an "evaporative cooler" it will stabilise the base humidity at approx 50% and temperatures around 24... not always ideal but still very good for what we're trying to do here. Hope this helps growmie ! π
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MadeInGermanyanswered grow question 4 years ago
Hi, if your exhaust air draws off too quickly and too much of the moist air, I would hang the exhaust air on a step transformer :-) ao you have the perfect control π
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