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.