Rainwater collection ( pros/ cons)

[Apflanzeneh@webtv.net]

Gary wrote: cons- irregular rainfall patterns storage ( feast or famine
)

I was planning on storing 3 weeks of water changes, in famine times when
I'm nearing the end of my cache' will this water be turning stagnent? If
i keep it circulating will this be o.k?
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Mike Downey wrote: i use strictly rainwater collected from the house
roof drain system

Joe Anderson wrote : keep in mind the toxins normally found in roofing
materials.