diy test kits

  1. W

    Simple DIY Automatic Alkalinity Tester - Phase #1: testing drop count

    Starting a new project for Simple DIY Automatic Alkalinity Tester for a common man with can be created and printed easily with minimum cost. Currently starting with: -Api KH bottle -Speed Sensor Module - https://www.aliexpress.com/item/32986575618.html?spm=a2g0s.9042311.0.0.26c94c4dlCiga1...
  2. shartpants007

    Does anyone know any cheaper ways of testing reef chemistry?

    So I just spent quite a bit on a 25 pack of 5-in-1 test strips. After having gotten home and using 2 already, I realized that the precision of the strips is sorely lacking, and that I could have gotten a 100 pack for a bit less than I paid for the 25 on Amazon. Of course, I had looked before I...
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