Hi
would like to get opinion.
I own an exteral Waterco water filter unit mayb model W/WD 250/300 which is more than 5 years.
Since 2 days back i started notice my cement slab started to be wet from below the filter unit.
I cant seems to find the leak from the top/surrounding or the joint.
So i am suspecting it mayb leak form below which i cant see it.

Is it recommended for repair or just change the whole unit?

I was wondering to try other brand bc my perception for external sand filter unit doesnt make much difference btw brand.

Any advice?

Thanks