I have used peat in the past and it works well if used properly. using it properly needs to be researched as it can casue large drops and lots of tannin release.
In regards to using this stuff, i would def tread carefully. I would look for proper aquariums stuff. even have a look online. maybe someone can shead more light on this stuff, i have only used Eheim peat and therefore cant really comment more.
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