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Post by Carl on Apr 9, 2018 9:28:39 GMT -5
UV Sterilizer Flow Rate TableHere is an excerpt: " Flow Rate & Turnover Rate Table: This table assumes: 1) Low water turbidity, meaning pre-filtration & a healthy bio filter. A UV Sterilizer will easily work twice as hard or more (requiring double the normal wattage or more) if your bio filter is not adequate and water turbidity is high; this is especially a common problem with ponds. 2) A water temperature between 20 C (68 F) and 40 C (104 F) 3) A gap of 3 cm or less between the bulb or quartz sleeve and the wall of the unit 4) A reasonable dwell time, as most low cost, filter equipped UVs, and submersible UVs have poor dwell time 5) A GOOD water flow pattern inside the aquarium or pond. 6) A clean Quartz sleeve/lamp 7) A hot cathode Low Pressure UV bulb/lamp with less than 6 months continuous use (NOT an old or cheap medium pressure UV bulb now so often sold on the Internet for $10 or less!!) If a medium pressure bulb is used (commonly sold at discounters), you will need divide the maximum flow rate by 1/3 to 1/4. Example: If you use a 9 watt UV lamp commonly sold via discounters for $6-$12, an optimum flow rate goes from 225 gph to under 75 gph for minimum level one sterilization!" Carl
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Post by Carl on May 8, 2018 16:07:58 GMT -5
Another update to the Category Section of the Aquarium/Pond UV Sterilization (How to use UV Sterilizers) article Here is an excerpt: Category C™; Basic Economy UV Clarifiers commonly sold via discounters, Amazon, Chewy, etc. with low dwell time, low output UVC (7%) lamps, poor contact design (especially HOB UVs), often or little no pre-filtration (examples include Mr Aqua UV, Submariner, Green Killing Machine, PF-15 HOB UV Filter, & many more). This includes the vast majority of UVs now sold often with simply different names on the same product without improving the UV lamp to HO, dwell time, and/or prefiltration
Category B™; Many Compact UVs such as the AAP/SunSun Terminator & CUP, Tetra, Turbo Twist with reasonable dwell time, HO 35% UVC lamps, assumed pre filtration
Category A™; High Dwell time UVs such as the AAP Vecton & Advantage, Aqua UV, with the highest dwell time, HO 35% UVC lamps, & assumed pre filtrationCarl
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Post by Carl on Jul 25, 2018 9:32:30 GMT -5
Another update to AAPs article about Aquarium/Pond UV Sterilizer UseHere is an excerpt: "This first picture to the left demonstrates the anti-oxidizing abilities of a true level one capable UV Sterilizer utilizing a HO UVC Lamp (note that the majority of lamps sold now are medium pressure UV lamps with 1/4 the UVC output). Using Potassium Permanganate, which is an oxidizer in both a control tank (left tank) and one utilizing an AAP Compact UV with a HO UVC Lamp (right tank). It is noteworthy that a "Category B" UV Sterilizer was used for this experiment. A "Category A" such as the AAP/TMC Vecton or Advantage would have cleared/reduced the oxidizer quicker.
What happens is, as Potassium Permanganate is reduced, it goes from red to brown to clear. It is easy to see that the UV Sterilizer tank goes through these stages well ahead of the control tank.
The implications demonstrate a true UV Sterilizer's ability to lower oxidative stress on fish and other inhabitants (including plants & corals) and work to provide a better Redox balance as well as known disease prevention & clarification abilities."Carl
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Post by Carl on Jul 29, 2018 14:14:35 GMT -5
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