RODI Units

[kaylshouse15]

Hiya, would this be ok for making water ? We live in Scotland in the highlands so our water is pretty good would I get away with using this ?

 

[NS Mike D]

without knowing what the TDS in your water and what form of chlorine is being used, impossible to be definitive. If your water is treated with chloramine, then you need a filter designed to filter that out (BRS has a good video explaining this). If your water is "pretty good" then this should be fine.

If you are investing in a RODI unit, I highly recommend adding a TDS meter. This will remove the guessing game as if the unit is sufficient and when to change the filters (other wise tank problems become you indicator).

I have a similar set up and I like that I can store it away when not in use. I make 5 gal/week so my needs are light. Changing filters is a bit more involved than the see through screw type units BRS sells, but I keep the instruction sheet saved on my laptop and after 4 years (4 replacements) its easy-peasy.

In the US we get water reports from out municipality and that help me confirm no chloramine and low TDS.

The unit you are looking at mighty be from the same folks as mine. The one I got was listed on their web site for reef tanks. They had identical units not listed for reef tanks and in the fine print saw that the latter took out less TDS. I presume that the cartridges used in the units are not all equal.

BRS mentions using an extra unit as a pre-filter which can extend the life of the more expensive filters down the line. When TDS starts to creep up you take out that first stage, move the second one in its place and then pop a new one in the second stage. Adding a stage to the unit at which you are looking takes a bit more effort than the BRS screw top models, but doable. An option if you find TDS creeping up faster than you think you should be replacing the resin and more expensive filters,

 

[Wee Mad Arthur]

Hiya, would this be ok for making water ? We live in Scotland in the highlands so our water is pretty good would I get away with using this ?

If you don’t mind a recommendation then I’d suggest https://www.ebay.co.uk/itm/5-Stage-...e=STRK:MEBIDX:IT&_trksid=p2057872.m2749.l2649

Their customer service is excellent if you have any questions or want help knowing which replacement filters to buy in the future.

 

[kaylshouse15]

without knowing what the TDS in your water and what form of chlorine is being used, impossible to be definitive. If your water is treated with chloramine, then you need a filter designed to filter that out (BRS has a good video explaining this). If your water is "pretty good" then this should be fine.

If you are investing in a RODI unit, I highly recommend adding a TDS meter. This will remove the guessing game as if the unit is sufficient and when to change the filters (other wise tank problems become you indicator).

I have a similar set up and I like that I can store it away when not in use. I make 5 gal/week so my needs are light. Changing filters is a bit more involved than the see through screw type units BRS sells, but I keep the instruction sheet saved on my laptop and after 4 years (4 replacements) its easy-peasy.

In the US we get water reports from out municipality and that help me confirm no chloramine and low TDS.

The unit you are looking at mighty be from the same folks as mine. The one I got was listed on their web site for reef tanks. They had identical units not listed for reef tanks and in the fine print saw that the latter took out less TDS. I presume that the cartridges used in the units are not all equal.

BRS mentions using an extra unit as a pre-filter which can extend the life of the more expensive filters down the line. When TDS starts to creep up you take out that first stage, move the second one in its place and then pop a new one in the second stage. Adding a stage to the unit at which you are looking takes a bit more effort than the BRS screw top models, but doable. An option if you find TDS creeping up faster than you think you should be replacing the resin and more expensive filters,

thanks for your reply ! great information

 

[kaylshouse15]

If you don’t mind a recommendation then I’d suggest https://www.ebay.co.uk/itm/5-Stage-RO-DI-resin-50-100-150GPD-reverse-osmosis-water-filter-system-aquarium/282667696158?ssPageName=STRK:MEBIDX:IT&_trksid=p2057872.m2749.l2649

Their customer service is excellent if you have any questions or want help knowing which replacement filters to buy in the future.

hiya, thanks ! when it says aquarium captivity what does this mean ? Like I will attach it to the garden tap and I do 10% water changes weekly on a 550liter tank.

 

[Wee Mad Arthur]

The membrane size indicates how fast the unit is able to produce water for example 100GPD is 100 gallons per day, however it will depend on your water pressure. Depending where you live it may go up and down all the time so some days it’ll produce the water quicker than others. It is also possible to buy a booster pump if your water pressure is low and you’re not happy with how fast it is being produced.

i do the same, it’s connected to a tap outside. I keep it outside year round in an insulated box with a thermostated tubular heater in there. I always make sure I have water made up well in advance and bring the water indoors a couple of days before water change day so that it can get to room temperature which means it’ll get to temperature quicker when I put the heater in.

 

[NS Mike D]

hiya, thanks ! when it says aquarium captivity what does this mean ? Like I will attach it to the garden tap and I do 10% water changes weekly on a 550liter tank.

typo? capacity is in gallons per day (GPD). You are planning to replace 55 liters per week. That is 14 gallons. A 50 GPD unit would take about 7 hours to make 14 gallons. The 150 GPD unit a little more than 2 hours.

Keep in mind that doesn't include your top off water.

also rodi create a lot of discharge water - more than your end product. I hook mine up next to my washing machine and discharge into that. others water their lawn with it .

 

[Wee Mad Arthur]

I should add that unless you are lucky you probably won’t see anywhere near that GPD. I don’t have experience of booster pumps so can’t say how much difference they make. Mine in the summer was producing 2 gallons per hour. In winter 2 gallons is taking 3 hours but like I said I make in advance so it doesn’t bother me.

 

[kaylshouse15]

The membrane size indicates how fast the unit is able to produce water for example 100GPD is 100 gallons per day, however it will depend on your water pressure. Depending where you live it may go up and down all the time so some days it’ll produce the water quicker than others. It is also possible to buy a booster pump if your water pressure is low and you’re not happy with how fast it is being produced.

i do the same, it’s connected to a tap outside. I keep it outside year round in an insulated box with a thermostated tubular heater in there. I always make sure I have water made up well in advance and bring the water indoors a couple of days before water change day so that it can get to room temperature which means it’ll get to temperature quicker when I put the heater in.

Thanks

 

[kaylshouse15]

typo? capacity is in gallons per day (GPD). You are planning to replace 55 liters per week. That is 14 gallons. A 50 GPD unit would take about 7 hours to make 14 gallons. The 150 GPD unit a little more than 2 hours.

Keep in mind that doesn't include your top off water.

also rodi create a lot of discharge water - more than your end product. I hook mine up next to my washing machine and discharge into that. others water their lawn with it .

thanks