3 stage mains powered RO - worth it?

[molc]

Got a link fir that pump by any chance? Also how loud is it.

[Slev]

Will dig it out.  Not loud at all.  Slight hum,  but if the piping is in contact with something,  you may get vibration clattering

Sent from my ONEPLUS A3003 using Tapatalk

[Slev]

https://m.aliexpress.com/item/1418933869.html#autostay

Sent from my ONEPLUS A3003 using Tapatalk

[molc]

Cheers!

[Qs]

Whoever bumped this thread just cost me €60 

[Will_D]

Be aware that its a 24 Volt pump!!

[Slev]

Sorry about that.

[braich]

Howryis - I recently got this compact unit. I got a cheapo TDS meter as well, and it's telling me the RO water is 0 ppm, which I'm sceptical about, but took it to mean that it was fairly pure. In any case, I brewed today for the first time with the water, making a simple smash pale ale. I used Bru'n water to work out the salt and acid additions. The predicted mash pH was 5.3, but it came out a bit higher at 5.7, which isn't crazy high, but definitely not as low as I would like for a pale beer. I had been using Ashbeck bottled water prior to this and would normally be much closer to the Bru'n water predicted mash pH. I'm thinking the water might not be as pure as the TDS meter would have me believe (as I've read Bru'n water is usually bang on for RO water), but there's also scope for a routine screwup, such as adding the wrong amount of a salt or acid. I'm wondering what other people's experiences with the water from these units has been, and if anyone has used the water in conjunction with Bru'n water?

[Dr Jacoby]

I'm thinking the water might not be as pure as the TDS meter would have me believe

You could test the RO water with an alkalinity kit to be sure.

[Beerbuddha]

Did you calibrate the ph pen before use ?
Is brun water set up correctly ? No idea if you have used it before so....If I input lets say my acid as strenght of 30% concentration when its 80% big difference. There are other inputs that cause issues.

Just some quick taughts

[braich]

Did you calibrate the ph pen before use ?
Is brun water set up correctly ? No idea if you have used it before so....If I input lets say my acid as strenght of 30% concentration when its 80% big difference. There are other inputs that cause issues.

Just some quick taughts

Hey - cheers for the reply. A basic screwup is always a possibility, so I wanted to check for other peoples' experiences with this water to help rule that in/out. Yeah I bought the pH meter that was recently purchased as a group buy here, and I calibrate it every brewday, though it doesn't seem to drift by all that much. I have used Bru'n water for the last ten brews or so, and am pretty sure it's set up right - I double checked the parameters after this brew just to be sure. With Ashbeck bottled water I was getting pretty close to the Bru'n water predicated pH in previous brews, which makes me suspect the water this time around. I used all viking pale ale malt, so maybe the malt was just a lower EBC than I inputted into the spreadsheet (5.5 EBC), though changing that up or down a few EBC points doesn't seem to change the predicated mash pH that much in the software.

[braich]

I'm thinking the water might not be as pure as the TDS meter would have me believe

You could test the RO water with an alkalinity kit to be sure.

Yeah that could help settle it. Those kits aren't that much - about 8 pound on brewuk. I was hoping to get some leaf hops from them anyway.

[DEMPSEY]

With RO it's hard to get accurate PH reading as there is nothing to buffer with left in the water.  My RO is reading around 7 ppm and I use the water treatment profile from beer smith and it gives me my desired PH number.

[braich]

With RO it's hard to get accurate PH reading as there is nothing to buffer with left in the water.  My RO is reading around 7 ppm and I use the water treatment profile from beer smith and it gives me my desired PH number.

Yeah I suppose the pH 5.7 reading I got is probably within the margin of error of the Bru'n water software and the probe, but it just seemed pretty high when I was getting fairly predictable readings with the Ashbeck water. I probably just need to brew again and see if its still out. Hmm - maybe I will also try the alkalinity test and see where the water from the RO system stands. Other options might include getting a fourth DI resin stage for the RO system. That should definitely get it down to 0 ppm.

https://www.amazon.co.uk/Compact-Reverse-Osmosis-Deionisation-Tubing/dp/B00K4D2NIK/ref=pd_sim_199_12?_encoding=UTF8&psc=1&refRID=7G75JP3DN1C6356BG7AP

[Slev]

I got one of those tds pen jobies, and get somewhere in the mid teens, which coincides with brun water.
Have only recently started to use beersmith, and found that it was giving  very similar ph and salt additions to brun water. For last brew, i used the viking malt also (free with bulldog mill from homebrewwest!). I have a cheap ph pen, which was giving a low ph reading during the mash (after salt and acid, as per brun Water). I trust in brun water, rather than the ph pen ( possibly one of my worst buys - just dont thrust it, but it puts doubt into my mind)