RO/DI Unit, options?

[rosco]

Hey everyone looking at running a good RO/DI system for my soon to be reef tank, whats available?

Im down in christchurch so virtually no choice down here, anything online? and recommendations? :thup:

Cheers guys,

Rosco

[spoon]

i brought one locally from tradme there is another seller on there water coolers direct or something bear in mind most will be RO units and you will need to change out the granular carbon for DI resin (which i havent found locally yet but hollywoods fish farm sell it) you will also need to change the order of the filters to go 1 prefilter 2 granulated carbon 3 ro 4 DI

[Warren]

Make sure you get something with big and 'standard' pre-filters and post-filters. I purchased a unit with specialised filter that only lasted about 3 months with constant use. I ended up buying new standard screw-type water filter canisters that fit standard filter elements. These only cost 2 x the price of the specialised units and lasted just over 1 year.

I went with a 20 micron pre-filter followed by a 0.5 micron silver activated carbon pre-filter then into the RO. I didn't use a post filter.

The better you pre-filter the incoming water the longer the membrane will last.

Check your water chemistry as well - there are different types of RO membranes to cope with specific types of water chemistry. Using the correct type is crucial if you want it to last.

Unfortunately you can't get what I was using any more.

[Zayne]

there was a thread a few weeks ago with good rodi filters, search it up