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Best value RODI system

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Hey guys

After some advice on an RODI system.  My local fish shop closed down :( so im having to travel further to get my water (there are a couple of other local shops, but im not confident of them).  Because of this it probably makes sense that i start making my own RODI and mixing my own salt.

Tank is only a little 20 gallon nano and i typically do a 5 Gallon water change each week and perhaps another 2-3 gallons of evaporation.

So can anyone recommend a suitable RODI unit for such a low volume.  There are some caveats!

1.  Needs to be pretty quick.  Sgt Major wont allow me to have mess in the house all day
2.  Needs to be pretty small for the above reason
3.  I guess i need to be able to get spares for it pretty easily.  I looked on ebay and they are pretty cheap, but can you always get new cartridges?  Or are they universal?

Another question about waste.  We are on a water meter so i would hate to have water going down the drain all day.  I have read that the pure/waste ratio tends to be around 1-4.  Is this typical?

Any advice would be warmly appreciated.

Cheers

R
 

fr499y

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Reply #1

put the waste into a water butt, mixes with the rain water and use it for plants/grass/garden. The waste is ok for washing up as well. There are ways to use the 'waste' water. Booster pumps tend to help reduce the waste ( iirc? )

chilliman

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Reply #2

Hey guys

After some advice on an RODI system.  My local fish shop closed down :( so im having to travel further to get my water (there are a couple of other local shops, but im not confident of them).  Because of this it probably makes sense that i start making my own RODI and mixing my own salt.

Tank is only a little 20 gallon nano and i typically do a 5 Gallon water change each week and perhaps another 2-3 gallons of evaporation.

So can anyone recommend a suitable RODI unit for such a low volume.  There are some caveats!

1.  Needs to be pretty quick.  Sgt Major wont allow me to have mess in the house all day
2.  Needs to be pretty small for the above reason
3.  I guess i need to be able to get spares for it pretty easily.  I looked on ebay and they are pretty cheap, but can you always get new cartridges?  Or are they universal?

Another question about waste.  We are on a water meter so i would hate to have water going down the drain all day.  I have read that the pure/waste ratio tends to be around 1-4.  Is this typical?

Any advice would be warmly appreciated.

Cheers

R
 

i got an tmc v2 pure 75 ro full  4 stage unit  which i don't use now with the extra tds meter and the di pod all set up, just need new filter/membrane filter and you good to go @ £80. when i had it running i made up 100 gal in a day which last a long time after for my nano tank when it was running without the booster pump. good little unit

rusty_uk

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Reply #3

@chilliman Sent you a PM

rusty_uk

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Reply #4

so i ended up getting a great deal on a second hand  TMC v2 pure 50.

It currently has the tds meter across the input and after the DI stage, so i can see whats going in and whats coming out.  But should i really care whats going in?  Would that sensor be better placed after the RO stage so that i can better tell which stage needs to be replaced?

HK_Fuey

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Reply #5

This is pretty comprehensive

rusty_uk

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Reply #6

very informative.  I suspect that this is an early BRS video since he seems a bit dull in this one (where as he is much more excitable in the later videos)

Doesn't really answer my question though :)

HK_Fuey

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Reply #7

Pre and post the resin.  But knowing what's going on tells you how efficient the membrane is too.

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