Tetra Pond 9-watt UV Clarifier?

I went to my local petsmart today and came across a Tetra Pond UV Sterilizer. It was in an open box so It was marked down from $150 to $70. I took it to the register and I told the manager I would give her $35 and she said ok, sweet. It is brand new with no sighns of use.

The box says it is rated for ponds up to 1800g and 900gph.

Is 9-watts enough?

I plan on plumming it in line on my new FX-5 on my 180g.

Any comments/suggestions/experience would be greatly appreciated, thank you.

Anybody please?

Stump;3804591; said:

Try the Setup and Filteration section. Somebody there will be sure to help you out.

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K thanks!