Pentair 50w flow rate

[Paulb89]

Hi

I've looked and looked and I'm confused by all the different information on uv flow rates

I have 525litre tank, I estimate it has 500 litres of water, I have a 50w pentair unit and I am currently battling procentrum dinos.

Could someone please tell me what flow I should he aiming for to help knock this on the head?

I plan on plumbing it directly from the DT and returning into the display, it's currently in the sump and tbh I haven't seen much of a difference in dinos, water clarity or algae build up on he glass so I assume my current rate is incorrect

 

[blaxsun]

To minimize crap that can buildup in your UV you ideally want to run filtered water through it. I don't know enough about your setup to advise how to best do this, though.

 

[Paulb89]

To minimize crap that can buildup in your UV you ideally want to run filtered water through it. I don't know enough about your setup to advise how to best do this, though.

The pump is currently in the sump and is located after my filter roller, I've always read the pump is most effective in the DT though, I understand what you're saying but I feel as though that's a trade off against clarifying your water of the intended goal.

I don't see how you could effectively run filtered water through a UV when the water is pumped directly from the DT? Unless I've missed something but I've never seen it done as a common thing?

 

[blaxsun]

The pump is currently in the sump and is located after my filter roller, I've always read the pump is most effective in the DT though, I understand what you're saying but I feel as though that's a trade off against clarifying your water of the intended goal.

I don't see how you could effectively run filtered water through a UV when the water is pumped directly from the DT? Unless I've missed something but I've never seen it done as a common thing?

The most effective way to plumb your UV is off the main returns, ie: utilizing the return pump. That way, 100% of the water that passes through to the display is UV treated.

However, this typically requires a manifold for maintenance, bypass, etc. and isn't something most tanks are setup with out-of-the-box. So those of us without manifolds make due - typically running an in-sump solution, ie: pulling from one chamber and depositing in another.

This is really no different than running a skimmer, reactor, etc. Basically you'll never get 100% of the water filtered, but by continually passing a new stream of water through over and over again you reach that high 99th percentile.