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where they're really needed
This pulls fresh air into the grow space (even if you're not using an intake fan)
meaning that they shift a greater volume of air for every watt of electricity consumed
Outdoor or Hydro pack
An air stone is highly recommended for all hydroponic systems
Bluelab - 2.77 EC Calibration Solution Bulky where they're really neededBluelab 2. 77 EC Calibration Solution Keeping your nutrient strength meter calibrated is essential for taking accurate readings, which in turn allows you to keep your nutrient solution at the correct strength range. If nutrient concentrations are too weak, plants become deficient and if they are too strong, plants will start to look burnt and overfed. When your meter is properly calibrated, you'll have much more faith in your readings, allowing you to
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