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  1. Equipment
    Just received my cheap Chinese standard eBay issue drop checker, and realized it only came with the reagent, but I'd have to make my own 4dKH solution. (my tank water is 7dKH, and I have the API kit). So there I was, looking up various DIY recipes and testing various water sources in my house...
  2. DIY
    I was at walmart looking for dvd's when I came across this small vase looking thing, I'm guessing for flowers, and thought to myself this might work as a drop checker. It was also only 97 cents. I inserted a $1 dropper into it, sealed the opening with silicon, added some magnets to hold it to...
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