It is what PMDD (the main origin of using dry ferts in aquarium in USA) use.
Paul Sears and Kevin Conlin are Canadian.
Actually the question should have been reversed:
“Can I use CSM+B in planted tank?”. :tongue:
CSM doesn't come with B. The sellers have to mix the B in themselves.
The percentage used to be 1.18%. But then there seemed to be some
confusion and now the B percentage is all over the place.
CMM and CSM are products from Plant Products Co., Ltd.
CMM: for Canadian market, contains boron but no magnesium.
CSM: for US market, contains magnesium but no boron.
The reason for this is beyond me.
There is a formula for Fe:B ratio which is around 5:1.
The CMM (this is what you've got) contains 7% iron.
Hence the 1.3% B (7/1.3 = 5.38).
Then when planted tank people in the US wanted to do that with their CSM.
They mixed some B in and the iron percentage reduced to 6.53% (along with
other nutrients) because of the additional substance.
Hence the 1.18% B (6.53/1.18 = 5.53).
You can use CMM without problem. If anything, it's the CMB+B with very low B (0.04%..wow)
which may cause boron deficiency. But I doubt whether the seller knows the real percentage.
It might have been 1.18% all along. Google will tell you that CSM+B contains 1.18% B.
There are some topics about boron here and at the APC forums.
My trace mix that I use has the same percent of Boron in it, I've been using it for a year now with no real issues, it's fine
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