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#1
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![]() Yes, the sodium hydroxide is Free
- add 40 grams of sodium hydroxide to 1 Liter of freshwater to prepare a 1M solution, then soak ur used GFO for a couple of days, and rinse - ull never need to buy GFO again. - if u want, for $25, i can prep a 1M solution, in a Lab grade 2.5 Liter bottle 604 779 1085 |
#2
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![]() I took xerxes up on his offer
Thanks you very much |
#3
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![]() ^^^ same. Thanks again for your generosity xerxes
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#4
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![]() no problem
![]() FYI Vancouver water: nitrate = 0.06ppm phosphate = <0.005ppm |