I agree with The Guy who agrees with Scythanith who agrees with coolhandgoose who agrees with gregzz4 who agrees with reefwars.
Measure out some Epsom salts into some R/O water and measure the concentration with your test kit. According to the fetilator, 2 teaspoonss of epsom salts in 1 litre of water should give you 1000 ppm Mg. Not exact but enough to see if you are in the ballpark.
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120 gallon sps/anemones/LPS reef since 2004
Apex controller
8 x 54 watt T5 PowerModule
Herbie's silent overflow system
Jebao DC 12000 return pump
Jecod CP-40 Cross-flow circulation device
Mini Bubble King 180
Barr Aquatics calcium reactor
Bucket fuge
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