Dear Andrew-san,
Dear Jpappy789-san,
Konnichiwa!
Thank you very much for your reply.
In many parts of Japan, tap water comes from rivers and is soft water and high quality. Unfortunately, in my area, tap water is a mixture of well water and river water. The water quality of the two wells on the farmland I can use is terribly bad, and the EC of the better one is EC (mS / cm) = 0.4. I once considered rainwater use, but inflexible laws have prevented me from making a decent pool to collect water on farmland. All I need is a 150 to 300 tons covered pool. In this country, water rates are considerably lower than in the United States (probably), so I considered using tap water. However, the mixed water from river supplied from K city and well water from K town pumping 400 meters below the ground was previously EC (mS / cm) = 0.4. After K town was merged into K city, the EC (mS / cm) dropped to 0.25. It is speculation that the mixing ratio has changed. I use this tap water now.
EC (mS / cm) of the well in my farmland I mentioned earlier is of 0.4, the main problems with this water are bicarbonate ions and iron. Iron removal is a bit easier, but excess bicarbonate is troublesome. The pumped well water gradually becomes alkaline by contacting the atmosphere.
However, with this well water, tropical Byblis grew without problems, although I put charcoal (made from rice seed husk) in the bottom of the pot.
Please go to:
http://icps.proboards.com/thread/524/awsome-japanese-hybrids
http://icps.proboards.com/thread/2348/scented-byblis
https://www.cpukforum.com/forum/index.php?/topic/31967-byblis-glandular-mucus/
Distilled water, RO water or extreme high quality river water, etc., can cause a bit of trouble in solution culture (nutriculture) or hydroponics. I think some members of this forum do Tissue Culture. I think many of them have the same experience. In Japan, this is a phenomenon often called "pH jump". When adjusting the pH of nutrient solution, at some point, the pH changes suddenly and dramatically, even though we are adding small amounts of acid or alkali substance. I use NaOH (or HCl) for TC and orthophosphoric acid for solution culture. Earlier I wrote that excess bicarbonate ion causes problems, but traces of bicarbonate ion act like a buffer and make pH adjustment easier.
Reverence for your style.
Kind regards from the Far East