SHRuuM's 1st Grow Journal Of NL - TW & EM

SHRuuM;2840369 said:

Over night the ppm level stayed at 1125 and when the bottle was shook up again, the level went to 1440ppm. This stuff works BUT its too darn expensive for continuous growing. The cheapest way to introduce CO2 is by a hamster watering device filled with vinegar dripping into a bowl of baking soda. The draw back to this method is finding a bottle that feeds no more than 1 drop a minute, or you'll end up "drowning" the baking soda. If one could find the old chemistry beaker with the valve at the bottom one could precisely feed the vinegar into the bowl of baking soda.

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