05-03-2013, 06:46 PM
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Originally Posted by MoneyMitch
so a 3w bulb has the same intensity as say a 30 watt?
a low flow/low waatt bulb is generally seen in uv's that are more focused towards green water while the higher end sterilizing ones are higher wattage and can have a higher flow. "dwell time" or I would rather call it exposure time im sure directly reflects how good of a performance you are getting along with how big /higher the wattage is.
ive heard of a guy getting gram neg filtration with a 30 watt at like 90 gph... never heard of such filtration at lower wattage then that unless the water was maybe trickling through...
No, a 3 watt bulb and a 30 watt bulb do not have the same intensity - that was the point I was making. Because a 3 watt bulb is weak, the amount of exposure time needs to be high because it will take longer to kill something. A 30 watt bulb is powerful, so it will kill things quickly and so a shorter exposure time is necessary. Of course one can have a prolonged exposure time with a high wattage bulb, but like I said it doesn't make things any deader. And of course a high flow with a low wattage bulb renders it useless.
I've spent an embarrassingly massive amount of time on forums and I've never heard of gram negative filtration. I assume you mean his UV kills gram negative bacteria? That would be expected from a 30 watt bulb, as that's quite powerful. But that doesn't mean that a lower wattage bulb doesn't as well, under the right conditions. I'd like to know how this guy determined he had "gram negative filtration". Sent from Petguide.com App