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Re: UltraViolet, ultracloudy
More than once folks have noted that UV lamps cause
photoreduction of some things in the water, iron or iron
chelators being one of them (or is that two?).
Hmm. What kind of UV are we talking about here?
UV-filters with UV-C radiation?
UV-fluorescents with UV-A and UV-B?
Regarding UV-fluorescents I have the following
I did the 50% weekly wc-method with weekly nutrient
doses and measured the Fe-content throughout a week
with a Hagen Reptiglo 5.0 UV-A and UV-B bulb and
the Fe-content dropped very rapidly after a couple of
days. The next week I ran the system without the UV-
bulb and the Fe-content didn't drop nearly as fast as
with the UV-bulb.
The colors of the L.arcuata and P.palustris became
really intense with the UV-bulb - but only with the
Now I dose every couple of days, so now I got
eager to test the UV-bulb again...