Gadgets!

Today two gadgets arrived in the post, it’s a nerd’s dream! These were:

  • Reverse Osmosis system

  • Total Dissolved Solids pen

RO systems are connected to the pipes of your normal water supply. The system filters the water, and outlets waste water with concentrated impurities and purified water with a very low TDS. A TDS pen measures the amount of impurities in solution by its electrical conductivity.

I tested the tapwater to find it had a TDS value of 225. After purification with my cheap RO system, it was reduced to a value of 15! You can think of RO water as water stripped bare for you to add known substances to. This is a great help when keeping sensitive aquatic animals such as shrimp, and is seemingly essential for difficult species.

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