There are many advantages of using distilled water, too many to list - smile!

One in particular is "You are guaranteed that your plant is going to get exactly what you put in the water, there is NOTHING in "Pure Distilled Water" accept "H2O" that certainty is a major benefit when using ferts/nutes in hydro environment.

Distilled water has no impurities as such - Nil chems, Nil TDS, PH-5.0 and you're guaranteed of the above - grin...

It is perfect for cleaning (removal of salts etc) materials/testing pens/gadgets, fantastic for the transport of nutrients to the roots, there is no blocking of any nutrients (Accept if it has the wrong ingredients - no matter what water then - grin), great for flushing etc...

I treat distilled water (The best, 100% H2O, chem free etc) like gold; I would strongly recommend everyone use distilled water if you're growing hydroponic...

Again, it is not a necessity though, but the impurities (Fit for human consumption) in drinking water, can build up and become quite dangerous to the plants indeed...

Here is a passage of text relating to distilled water and hydroponics "Pure water is actually an essential ingredient in the fertilizers used for hydroponic farming. Vegetables grow in a contamination free environment and thus retain crispness and freshness for a longer period of time."

Anyways, do a little reading on "Pure Distilled Water" and you will see the amazing benefits, as opposed to tap water...

Here's a link for more info on Distilled Water:
Refresh Pure Water - Created Through Steam Distiller

Enjoy!

P.S. How lush and green are the rainforests, why? Because of the rain water, what is rain water - pure H2O "Please don't mention pollution aspect of rain water, Iā??m talking the middle of no-where here - grin", and what is distilled water - pure H2O. Anyways, do a little reading on "Pure Distilled Water" and you will see the amazing benefits, as opposed to tap water...
jmd1109 Reviewed by jmd1109 on . Dear n00bs: Distilled water warning Okay, so I've bought some distilled water thinking that it's the shit. Then I ended up buying a liquid pH tester and it turns out that distilled water is acidic in nature. So be very careful! pH your water after you add nutes so you don't end up getting nutrient lockouts!!! Rating: 5