Is anyone using a Vecton UV strerilizer?

[jpbeen]

I recently purchased a Vecton 600 UV sterilizer for my Red Sea 5252XL. I had a bad algae bloom and Ich outbreak. Within 3 days my water was pristine. Today I lowered my UV pump to 300 gph and hope control my ich problem.

 

[Malcontent]

I wouldn't lower the flow rate since you end up treating less water.

Studies have found that faster flow rates are better in recirculating systems.

 

[jpbeen]

I wouldn't lower the flow rate since you end up treating less water.

Studies have found that faster flow rates are better in recirculating systems.

To target Parasites (Ich) you have to lower 10-12 GPH per watt. Mine is a 25 watt so 300gph. To fight Dinoflagellates, Bacteria, Algae use 30-35 GPH per watt. I did this first to clear up the water. My main return pump is running normal cycle.

 

[Malcontent]

To target Parasites (Ich) you have to lower 10-12 GPH per watt. Mine is a 25 watt so 300gph. To fight Dinoflagellates, Bacteria, Algae use 30-35 GPH per watt. I did this first to clear up the water. My main return pump is running normal cycle.

Perhaps in a single-pass system but in a recirculating system, the dose of UV delivered to the water remains the same regardless of flow rate.

Double flow rate and halve dwell time...but double the passes. Dose is the same.

However, if flow rate is too low and the water receives a dose greater than that require to "kill" a target organism, you get no benefit from over-sterilizing the water but performance suffers due to less water being treated. The trade off breaks down.

As I said before, there are several studies demonstrating this.

 

[Keen4]

I was interested in buying this - do you have to unscrew the cover off every time? Are they regular Phillips screws? How big is it? Does in fit in your sump?

 

[LiamPM]

Perhaps in a single-pass system but in a recirculating system, the dose of UV delivered to the water remains the same regardless of flow rate.

Double flow rate and halve dwell time...but double the passes. Dose is the same.

However, if flow rate is too low and the water receives a dose greater than that require to "kill" a target organism, you get no benefit from over-sterilizing the water but performance suffers due to less water being treated. The trade off breaks down.

As I said before, there are several studies demonstrating this.

Im interested......But dont think i follow what you are saying.

If you dont get the correct flow rate, youd have the parasite pass through the UV multiple times a day but each time it simply gives it a tan, instead of burning it to a pulp, because it didn't make a long enough contact.

If you get the correct flow rate, contact time, it can kill the parasite, so it wont ever need to flow through the UV again.

More times the water flows through can be beneficial to some things but definitely not in a sense for lowering a parasite infestation. Contact time is super important in that regard. It has to be killed by the correct contact time to power otherwise you are just giving it a trip through a plastic housing every so often surely.

 

[Lasse]

Im interested......But dont think i follow what you are saying.

If you dont get the correct flow rate, youd have the parasite pass through the UV multiple times a day but each time it simply gives it a tan, instead of burning it to a pulp, because it didn't make a long enough contact.

If you get the correct flow rate, contact time, it can kill the parasite, so it wont ever need to flow through the UV again.

More times the water flows through can be beneficial to some things but definitely not in a sense for lowering a parasite infestation. Contact time is super important in that regard. It has to be killed by the correct contact time to power otherwise you are just giving it a trip through a plastic housing every so often surely.

I´m 100 % with this. UV-C kills through damage of the DNA - its needs a certain contact time or more precisely - a certain radiation flux during a certain time - in order to do that. There is some indications that if the contact time (and therefore the radiation dose to low for killing) is to low - it is only damage some parts of the DNA without killing the parasite.

However - in a normal biofilter there the uptake of NH3/NH4 and NO2 are instant when such a molecule past a nitrification bacteria - the flow rate in a recirculation system is of no concern - a very high flow rate could instead benefit the nitrification rate by providing more oxygen and flush away dead organic material (read bacteria mass)

Sincerely Lasse

 

[Tuna Melt]

I recently purchased a Vecton 600 UV sterilizer for my Red Sea 5252XL. I had a bad algae bloom and Ich outbreak. Within 3 days my water was pristine. Today I lowered my UV pump to 300 gph and hope control my ich problem.

Can you provide an update on your satisfaction of this UV and how its handled Ich? I'm considering it to manage Ich