SPS Growth Puzzle

[Aquattro]

Originally Posted by littlesilvermax

I used to get major precip, but after adding HUGE amounts of magnesium it went away.
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What gets me, is when did Mg start becoming a supplement? 10 years ago nobody even heard of dosing, and there were a lot of awesome tanks out there. And for me, I guess my levels measure fine due to the large Ca reactor I run. But I've never dosed and never had a need to...