Hi guys...
Wanted to perhaps pick the brains of those who have more knowledge than myself... I have a 2 bag Sandfilter set-up that runs through a 30watt Zap UV Clarifier and into a biofilter and then back into my pond... system works great but I am constantly battling with the UV Clarifier... either the globe blows or the actual unit goes weird on me and stops working... I now have 2 Zap 30 watt units that I interchange constantly but still no luck with keeping them running properly. The other hassle I have is that whoever set they system up squashed it into a really weird space so it's all very tightly packed which might be a problem as well. Couple of questions: Is there a tougher UV unit I can get hold of that will last longer, or should I be lookng at one of those "inclusive" biofilter/UV combos to prevent this Zap Unit from dying on me all the time? If I do get a biofilter UV/combo, can I still use it in conjunction with the sand filter?
Thanks!
keith

Keith,

What is the size of your pump?
What is the size of your pond?
Why do you use a UV light?

Hi Pieter
To be honest I inherited the entire system when I moved ino the house... so I'm an extreme novice and I don't even know the size of my pond...
I will have to measure and do some calculations, but it's not huge... so I've just been emulating the system I have... the UV clarifier was built into the system from the start... it all works pretty well except for the UV part of it...
- k -

Hi Keith, is your UV before or after the sandfilter. If before, the backpressure of the sandfilter might cause the problems.

Maybe your flow through the UV is too large. See maximun flows:



BTW, you get a Quartz sleeve UV but it is much more expensive.

Hi Guys

Thanks for the tips

The UVC is after my sandfilter. Not sure about the flow rate, if I wanted to work it out, what would I have to do...?

- k -

Check the flow rate of the pump. If too high, you can split the flow.