Mold and Mildew Test

Circular Mold on Tap Water Surface

After 60 days of testing, the tap water only filament is mostly covered with mold, even after adding 2 cap-fulls of 3% hydrogen peroxide in mid Feb.  And as with the tap water sample containing the penny, a slimy  circular pattern of mold has formed on the water surface. 

Mold Formation on Tap Water Filament

Mold Formation on the Distilled Water Filament

The distilled water only filament , also after adding 2 cap-fulls of 3% hydrogen peroxide in mid Feb, has about the same amount of mold formation as the tap water filament. It does not have the circular pattern of mold, which seems to occur only with tap water.

---

No Mold Formation on Distilled Water with Peroxide Filament

​Both of the filaments in distilled water with 3% hydrogen peroxide, from the beginning of the testing, continue to show no sign of mold formation. ​​

---