[Ian101]

In process of rebuilding my static system and currently run with "20" pre filters - is there any advantage to switching to "10" pre filters ?

Logic tells me that the "10" pre filters will last 50% less than "20" pre filters ??

Thought best to ask in case Im wrong 

[Flash..]

I did the same last month and decided that there is no cost saving in having 20" and it must be better to have a fresh filter more often rather than a dying 20" so went for 10".  The only advantage I could see with 20" is less time spent changing filters.

But went with a fiberdyne (sp) which means only one filter instead of the normal two.

[Spruce]

In process of rebuilding my static system and currently run with "20" pre filters - is there any advantage to switching to "10" pre filters ?

Logic tells me that the "10" pre filters will last 50% less than "20" pre filters ??

Thought best to ask in case Im wrong 

Hi Ian

That certainly applies to the Fiberdyne carbon block filters that Gardiner sells. The 10" ones have a life expectancy of half the 20" ones. I would stick with the 20's TBH.
They are also twice the price of the 10" so the cost is the same in the end.

I have to meter on my r/o and replace the Fiberdyne once 78000 litres has been processed, the recommended change interval for a 20 Fiberdyne filter - for us with a 4040 approx every 3 months.

[Alex Gardiner]

In process of rebuilding my static system and currently run with "20" pre filters - is there any advantage to switching to "10" pre filters ?

Logic tells me that the "10" pre filters will last 50% less than "20" pre filters ??

Thought best to ask in case Im wrong 

The only advantage of 10" pre-filters is that they are more compact. If you already have 20" housings and the space for them then stick with them as they are more economical and save on servicing time due to their longer life.

[Ian101]

thanks for fast replies chaps ..... hmmmm fibredyne did look at that as well but does it really do the job of 2 pre filters ... my 4040 just hanging on in there 5 years old TDS 180 in and TDS 015 out ... was gonna change the 4040 filter but have opted for second DI instead

[Ian101]

In process of rebuilding my static system and currently run with "20" pre filters - is there any advantage to switching to "10" pre filters ?

Logic tells me that the "10" pre filters will last 50% less than "20" pre filters ??

Thought best to ask in case Im wrong 

The only advantage of 10" pre-filters is that they are more compact. If you already have 20" housings and the space for them then stick with them as they are more economical and save on servicing time due to their longer life.

thanks Alex

[Scrimble]

Alex - is it ok to use 2x long life 20" prefilters instead of just one?

[Alex Gardiner]

Alex - is it ok to use 2x long life 20" prefilters instead of just one?

You could, but I would not recommend it for the following reasons:

1. Only the first filter would actually do any chlorine removal for the life of the 1st filter
2. Although when the 1st filter 'runs out' the second could then start working, the 'spent' first filter would then tend to slow up the flow rate of water due to being old and having taken on sediment from the water
3. The flow rate of water through two units would be more restricted than through just 1 filter - this would affect RO production rates.