UV - Vecton 600 UV Flow rate

[Zoa.Mania]

I got a vecton 600 Uv on a 170L system which I believe is overkill.

The thing is I haven't found any solid water flow numbers on whom I suppose to run for algae ”killing” application. The max water flow stated by the manufacturer is 1900L per hour.

For bacterial removal this thread says he's running 400l/h and it seems to work by his orp drop

can I schedule 12 hours for algae rate and 12 hours for bacterial rate? Will it be as effective or should I saddle for one type of application and run it full time?

What do you think?

 

[blaxsun]

It says it's rated for tanks up to 600L, so most likely it is overkill. Here's what I found for recommended flow rates for you:

* Dinos, algae ... 30-35 Gph per watt, ie: 750-875 Gph (2840-3300 lph)
* Parasites ... 10-12 Gph per watt, ie: 250-300 Gph (945-1135 lph)

So with this UV I don't think there's any way of running it just for algae as it's simply too powerful.

 

[Zoa.Mania]

It says it's rated for tanks up to 600L, so most likely it is overkill. Here's what I found for recommended flow rates for you:

* Dinos, algae ... 30-35 Gph per watt, ie: 750-875 Gph (2840-3300 lph)
* Parasites ... 10-12 Gph per watt, ie: 250-300 Gph (945-1135 lph)

So with this UV I don't think there's any way of running it just for algae as it's simply too powerful.

Thanks for the research and answer

Isn't the power determined by the contact time of the water with the uv? So why I can't run it just for algae following the flow rates you mentioned?

 

[blaxsun]

Thanks for the research and answer

Isn't the power determined by the contact time of the water with the uv? So why I can't run it just for algae following the flow rates you mentioned?

Yes, but the recommended (minimum) exposure for algae is about 20x your tank volume. With a return pump you'll typically run 3-5x - maybe as high as 7-10x - but 15-20x would probably be the equivalent of dropping a small maelstrom into your tank. So you can certainly run it at a slower speed - somewhere between 945-2840 will give you more than straight algae exposure but less than parasites.

 

[Zoa.Mania]

Yes, but the recommended (minimum) exposure for algae is about 20x your tank volume. With a return pump you'll typically run 3-5x - maybe as high as 7-10x - but 15-20x would probably be the equivalent of dropping a small maelstrom into your tank. So you can certainly run it at a slower speed - somewhere between 945-2840 will give you more than straight algae exposure but less than parasites.

I am running the uv through ac pump inside the sump so I can choose the flow rate without considering the return to the main tank.

Still the same 945-2840 will be the best for algae?

Another thing is... Maybe on the lower flow rates (about 1000) I can achieve both purposes?

 

[blaxsun]

I am running the uv through ac pump inside the sump so I can choose the flow rate without considering the return to the main tank.

Still the same 945-2840 will be the best for algae?

Another thing is... Maybe on the lower flow rates (about 1000) I can achieve both purposes?

If you're running a separate pump for the UV, yes - you can choose a different speed. The numbers I listed were direct from the manufacturer, so yes - 1000 lph should give you both algae and parasite control.

 

[Zoa.Mania]

If you're running a separate pump for the UV, yes - you can choose a different speed. The numbers I listed were direct from the manufacturer, so yes - 1000 lph should give you both algae and parasite control.

Thank you

 

[juboy27]

It says it's rated for tanks up to 600L, so most likely it is overkill. Here's what I found for recommended flow rates for you:

* Dinos, algae ... 30-35 Gph per watt, ie: 750-875 Gph (2840-3300 lph)
* Parasites ... 10-12 Gph per watt, ie: 250-300 Gph (945-1135 lph)

So with this UV I don't think there's any way of running it just for algae as it's simply too powerful.

I have the same UV 600v2 I want to maintain white spot. Does tank size come into this equation. I have about 600L including the sump and small satellite tank and I’m going to hook up to uv 600 v2 in line with each other

 

[blaxsun]

I have the same UV 600v2 I want to maintain white spot. Does tank size come into this equation. I have about 600L including the sump and small satellite tank and I’m going to hook up to uv 600 v2 in line with each other

By white spot I assume you mean parasites? Tank size shouldn't matter as 600L falls within the recommended size. You'll still want a net flow of 250-300Gph.

 

[juboy27]

I have the same UV 600v2 I want to maintain white spot. Does tank size come into this equation. I have about 600L including the sump and small satellite tank and I’m going to hook up to uv 600 v2 in line with each other

bloody hell, I’ve just measured the water coming out my UV at the moment not adjusted and just measured the water going in my main tank, lol looks like I need to install bigger pipe on the UV as it’s restricting flow and run it up to my main tank this will be bought put in the bulk of the water from the sump into my main tank going through the UV does that seem right to you guys?