DISTILLED WATER - Weed Growing Guide
Some growers report purified or distilled water helps their plants grow
faster. Perhaps due to sodium and heavy metals found in hard water that are not
present in purified water. Hard water tends to build up alkaline salt deposits
in soil that lockup trace minerals, and cause iron, copper and zinc
deficiencies. There are several types of purified water, but many are not free
of minerals that could be causing salt buildup over an extended period of time.
Tap water comes in two flavors. Hot and cold. The cold pipe has less calcium
and sodium buildup in it, and should be freer of sediment once the water has
been turned on and allowed to flow for 30 seconds. Hot water will have rust,
lead deposits, and lots of sodium and calcium, so much so, you will see it
easily. Use only the amount of hot water needed to make the water the correct
temperature (70-80 F). Tap water filtered through a carbon (charcoal) filter
will be free of chlorine and most large particles, but will still contain
dissolved solids such as sodium and heavy metals (lead, arsenic, nickel, etc.).
Purified bottled water will be either Reverse Osmosis or some form of
carbon/sediment filtered water. When purchasing water at a store, unless it says
RO or Distilled, don not bother buying it. It could still have the same
dissolved solids and heavy metals your tap water has.