QUOTE(BuckRoger @ Oct 11 2013, 01:28 AM)
Very interesting thread & very informative...
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1 questions :
Could it be, because the reaction of water & material of tube itself??
As Distilled water can be any kind of water that has been vaporized and collected, leaving behind any solid residues, including minerals. Distilled water has no minerals in it at all and thus acts as a chelator by attracting whatever mineral it touches to satisfy it needs, Water is actually a living things.
Pardon me if im wrong... Ph is only to check on how acidic the water is, nt to check the mineral contain in the water..
I mean would it b the same if we using different type of water instead distilled water.
The well known reason why not mineral water is because of algae.. Aint we have silver coil & cooper to get rid of algae??
Silver: This element has been known for centuries as an effective bacteria and virus killer. Silver sulphadiazine is the standard antibacterial treatment for burns and open wounds, and silver nitrate is used to protect the eyes of newborns. Some activated carbon filters for drinking water purification are impregnated with silver to prevent bacterial buildup. Silver is also used in drinking water treatment by airlines and passenger ships.
The National Aeronautics and Space Administration (NASA) designed a silver ionization system for its Apollo flights. The Johnson Space Center developed an electrolytic silver ion generator weighing only 9 ounces, requiring minimal power and no astronaut monitoring. Installed in the potable water supply and wastewater systems, the device would dispense silver ions to eliminate bacteria and viruses.
Copper: Copper is also now recognized as one of the best algae killers, and oxides and sulfates of copper are used in pesticides, algaecides and fungicides. Pool stores sell copper-based algaecide to kill black algae, the toughest of all.
Ions affect cell walls
When copper and silver ions and nanoparticles are released into water, these cations (positively charged) are a potent microbicide. These ions bond with negatively charged areas on the microorganism’s cell walls, affecting cell wall permeability and minimizing the intake of life-sustaining nutrients.
Inside an algae cell, copper and silver attack sulfur-containing amino acid radicals in the proteins used for photosynthesis. Photosynthesis and reproductive processes are blocked, leading to cell lysis (disintegration) and death.
Maybe I can give some input here as well.
A point to note about plasticiser from flexible tubing is also because of temperatures. Infernoaswen did a nice job of compiling results from rather controlled specimens, but if you were to refer to other forums where they've collected results from various users using different setups where temperature varies a lot, you'll see that sometimes a certain brand will perform well and sometimes will not.
Distilled water is pretty much dead water. Has nothing. No minerals, no microbes, no spores, dead. For all purposes of using distilled water in our loop, it's just there to conduct heat. Upon contact with the blocks we use, you'll get weird metal ions though.
Silver works yes, but not immediate, and not unless you put enough of it. It works when there is enough silver ions in the water to kill whatever spores or living rubbish in the water.
As for copper, the copper you want is copper sulphate, not regular copper or copper ions, otherwise those of us using full copper blocks and loops should have been perfectly okay from the start. Copper sulphate is the stuff you want.
For this reason, people use silver and biocide together, biocide for immediate effect and silver for the long run, since biocide typically needs to be topped up.
Algae and plasticiser are two different things btw. Algae is natural, plasticiser is from the tubing itself, making it a chemical based substance and rather unpredictable when dealing with different working conditions and tube batches.