Tropical Fish Forum » Tropical Fish Keeping Help and Advice » Fish Tanks and Equipment » TMC V2 Pure 75 Reverse Osmosis - Whats your water pressure?

TMC V2 Pure 75 Reverse Osmosis - Whats Your Water Pressure?

« previous next »
Pages: [1]   Go Down

Author Topic: TMC V2 Pure 75 Reverse Osmosis - Whats your water pressure?  (Read 7292 times) 13 replies

0 Members and 1 Guest are viewing this topic.

Offline Evolution Stu

  • Fishy Member
    • *
  • Posts: 64
  • Likes: 4
  • Tropical Fish Forum User
TMC V2 Pure 75 Reverse Osmosis - Whats your water pressure?
« on: June 16, 2016, 04:27:28 PM »
  • Likes On This Users Post 0
Hi folks,
Ive just hooked up a booster pump to fix my lowly 35psi mains pressure into my new TMC V2 Pure RO system, but its gone up to 110psi.

Annoyingly, TMC dont state a "Maximum" perssure, only that it needs at least 50psi.

What are you guys running your RO ssytems at?
Logged

Offline Littlefish

  • Global Moderator Subscriber
  • Superstar Think Fishy Member
    • *
  • Posts: 4076
  • Likes: 330
  • aka Donna
Re: TMC V2 Pure 75 Reverse Osmosis - Whats your water pressure?
« Reply #1 on: June 16, 2016, 10:22:44 PM »
  • Likes On This Users Post 0
That seems like quite a dramatic increase.

I'm afraid I can't help with RO questions as I don't run one. I've just gone with keeping fish that are comfortable in the relatively hard water in this area.
Logged

Offline Evolution Stu

  • Fishy Member
    • *
  • Posts: 64
  • Likes: 4
  • Tropical Fish Forum User
Re: TMC V2 Pure 75 Reverse Osmosis - Whats your water pressure?
« Reply #2 on: June 16, 2016, 11:09:43 PM »
  • Likes On This Users Post 0
Quote from: Littlefish on June 16, 2016, 10:22:44 PM
That seems like quite a dramatic increase.

I'm afraid I can't help with RO questions as I don't run one. I've just gone with keeping fish that are comfortable in the relatively hard water in this area.

Plainly you are someone with a lot more sense than me.

My problem was I saw the fish, loved them and bought them. THEN I tested the water.

Idiot... What a lot of messing around! LOL
Logged

Offline Littlefish

  • Global Moderator Subscriber
  • Superstar Think Fishy Member
    • *
  • Posts: 4076
  • Likes: 330
  • aka Donna
Re: TMC V2 Pure 75 Reverse Osmosis - Whats your water pressure?
« Reply #3 on: June 16, 2016, 11:28:06 PM »
  • Likes On This Users Post 0
I saw fish at the LFS, loved them, came home, looked them up on the fish profiles here, then looked disappointed for a while as I realised I couldn't keep the fish I like the look of.
Then I just started searching for fish that could survive in hard water and it escalated from there.  :)
Logged

Offline Evolution Stu

  • Fishy Member
    • *
  • Posts: 64
  • Likes: 4
  • Tropical Fish Forum User
Re: TMC V2 Pure 75 Reverse Osmosis - Whats your water pressure?
« Reply #4 on: June 16, 2016, 11:34:50 PM »
  • Likes On This Users Post 0
I dont have a single doubt in my mind that I will still end up with some unsuitable fish, even after trying to do it all properly. lol

Quote from: Littlefish on June 16, 2016, 11:28:06 PM
I saw fish at the LFS, loved them, came home, looked them up on the fish profiles here, then looked disappointed for a while as I realised I couldn't keep the fish I like the look of.
Then I just started searching for fish that could survive in hard water and it escalated from there.  :)
Logged

Offline Extreme_One

  • Super Hero Member
  • Superstar Think Fishy Member
    • *
  • Posts: 803
  • Likes: 52
  • Call me Simon
Re: TMC V2 Pure 75 Reverse Osmosis - Whats your water pressure?
« Reply #5 on: June 17, 2016, 06:58:54 AM »
  • Likes On This Users Post 0
I buy RO at £3 for £25L  :P

I know it's not very cost-effective but it saves the issues around installing an RO unit at home.

What does one do with all that waste water?!? :yikes:
Logged
A Selection of Fish in my Fish Community Creator Tanks
Tiger Barb (1) - Cardinal Tetra (17) - Otocinclus (1) - Agassiz's Dwarf Cichlid (2) - Ornamental Snails (50) - Assassin Snail (2) -
Note: The user may not necessarily own these fish, these are tanks that they may be building or researching for stocking purposes

Offline ColinB

  • Superstar Think Fishy Member
    • *
  • Posts: 1787
  • Likes: 52
Re: TMC V2 Pure 75 Reverse Osmosis - Whats your water pressure?
« Reply #6 on: June 17, 2016, 08:23:01 AM »
  • Likes On This Users Post 0
Quote from: Extreme_One on June 17, 2016, 06:58:54 AM
I buy RO at £3 for £25L  :P

I know it's not very cost-effective but it saves the issues around installing an RO unit at home.

Use rainwater, Simon. I did for a couple of years and had no problems. I even ended up with wiggly lavae things in the w/c water which the fish loved. Free water and free food :))
Logged
A Selection of Fish in my Fish Community Creator Tanks
Panda Cory (7) - Honey Gourami (3) - Ember Tetra (9) - Lemon Tetra (4) - Cherry Barb (1) - Otocinclus (2) -
Note: The user may not necessarily own these fish, these are tanks that they may be building or researching for stocking purposes

Offline Evolution Stu

  • Fishy Member
    • *
  • Posts: 64
  • Likes: 4
  • Tropical Fish Forum User
Re: TMC V2 Pure 75 Reverse Osmosis - Whats your water pressure?
« Reply #7 on: June 17, 2016, 08:44:57 AM »
  • Likes On This Users Post 0
Quote from: Extreme_One on June 17, 2016, 06:58:54 AM
I buy RO at £3 for £25L  :P

I know it's not very cost-effective but it saves the issues around installing an RO unit at home.

What does one do with all that waste water?!? :yikes:


I considered it hard mate, but as I plan to change a third around 100 litres every week that was potentially £12 a week / £624 a year. This system with pump and water butt was under £200 so long term I am quids in, water costs aside.


I will have to work out the water costs too of course, I've no idea what it costs per litre on the meter.


The other bonus of course, is I always have as much of it as I want at any time of day or night, and of course I know it's not been sat in some LFS's shed for 6 months. (That said - does it matter? I don't know. )
Logged

Offline Evolution Stu

  • Fishy Member
    • *
  • Posts: 64
  • Likes: 4
  • Tropical Fish Forum User
Re: TMC V2 Pure 75 Reverse Osmosis - Whats your water pressure?
« Reply #8 on: June 21, 2016, 02:19:40 PM »
  • Likes On This Users Post 0
For reference, this is the reply from TMC:

 Good afternoon Mr Sanderson
Thank you for your email. The maximum PSI for the V2 pure 75 RO system is 100 psi and would not recommend going above this, as it will put too much pressure on the RO membrane. We would advise you to reduce the pressure on the unit to avoid this happening.

Kind Regards

May Brewster
Tropical Marine Centre
Solesbridge Lane
Chorleywood
Herts
WD3 5SX
 
Logged

Offline Paddyc

  • Super Hero Member
  • Superstar Think Fishy Member
    • *
  • Posts: 894
  • Likes: 53
  • Location: Falkirk, Scotland
Re: TMC V2 Pure 75 Reverse Osmosis - Whats your water pressure?
« Reply #9 on: June 21, 2016, 09:18:43 PM »
  • Likes On This Users Post 0
Does it essentially boil down to you maintaining a pressure that will economically give you the amount of RO water you require? Does an increase in pressure = faster RO water production?

From an engineering perspective, aim for 2/3 of operating capacity... Hydraulic systems (on aircraft anyway) are inherently tested to between 25% and 100% higher pressures than they are operated at on aircraft.
Logged

Offline Evolution Stu

  • Fishy Member
    • *
  • Posts: 64
  • Likes: 4
  • Tropical Fish Forum User
Re: TMC V2 Pure 75 Reverse Osmosis - Whats your water pressure?
« Reply #10 on: June 24, 2016, 06:58:49 AM »
  • Likes On This Users Post 0
Quote from: Paddyc on June 21, 2016, 09:18:43 PM
Does it essentially boil down to you maintaining a pressure that will economically give you the amount of RO water you require? Does an increase in pressure = faster RO water production?

From an engineering perspective, aim for 2/3 of operating capacity... Hydraulic systems (on aircraft anyway) are inherently tested to between 25% and 100% higher pressures than they are operated at on aircraft.


More or less, yes.
The RO system works on differential pressure and forcing water from high to low via a permeable membrane.
The problem at low pressure is wastage, not enough goes through the membrane so you lose a lot, and of course production is slower.


At 30psi it too just over 3hrs to make 25litres. Now at 110psi it takes 1hr 20mins with a lower percentage of waste.



Logged

Offline Evolution Stu

  • Fishy Member
    • *
  • Posts: 64
  • Likes: 4
  • Tropical Fish Forum User
Re: TMC V2 Pure 75 Reverse Osmosis - Whats your water pressure?
« Reply #11 on: June 24, 2016, 06:59:08 AM »
  • Likes On This Users Post 0



In the name of completing the topic with data, TMC have replied and advised me that their RO membrane is rated to a max pressure of 100psi and suggest the membrane may be damaged with pressures in excess of that.
Logged

Offline ColinB

  • Superstar Think Fishy Member
    • *
  • Posts: 1787
  • Likes: 52
Re: TMC V2 Pure 75 Reverse Osmosis - Whats your water pressure?
« Reply #12 on: June 24, 2016, 07:25:27 AM »
  • Likes On This Users Post 0
You'll be wanting something like this, then... Honeywell pressure reducing valve

Logged
A Selection of Fish in my Fish Community Creator Tanks
Panda Cory (7) - Honey Gourami (3) - Ember Tetra (9) - Lemon Tetra (4) - Cherry Barb (1) - Otocinclus (2) -
Note: The user may not necessarily own these fish, these are tanks that they may be building or researching for stocking purposes

Offline Evolution Stu

  • Fishy Member
    • *
  • Posts: 64
  • Likes: 4
  • Tropical Fish Forum User
Re: TMC V2 Pure 75 Reverse Osmosis - Whats your water pressure?
« Reply #13 on: June 24, 2016, 09:36:40 AM »
  • Likes On This Users Post 0
Yeah.
Ive asked the supplier to either change the pump or supply a pressure reducer. Will see what they say.
Logged
Pages: [1]   Go Up
« previous next »
Tags:
Tropical Fish Forum » Tropical Fish Keeping Help and Advice » Fish Tanks and Equipment » TMC V2 Pure 75 Reverse Osmosis - Whats your water pressure?
 


Assess Tankmates In The Tropical Fish Community Creator


Topics that relate to "TMC V2 Pure 75 Reverse Osmosis - Whats your water pressure?"

  Subject - Started by Replies Last post
6 Replies
10918 Views 		Last post December 17, 2012, 01:12:19 PM
by ColR1948
3 Replies
4747 Views 		Last post July 10, 2014, 07:47:33 PM
by Rich_D
0 Replies
2394 Views 		Last post March 25, 2015, 11:49:36 PM
by Andy1987
8 Replies
10644 Views 		Last post October 21, 2017, 07:50:50 PM
by Andy The Minion
6 Replies
2801 Views 		Last post May 15, 2018, 04:17:27 PM
by pollydoodle
14 Replies
6875 Views 		Last post June 04, 2018, 09:51:16 PM
by fcmf
3 Replies
5889 Views 		Last post May 12, 2019, 10:26:37 PM
by Cod_only_knows

Sitemap 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 
Tropical Fish Keeping Help and Advice
Tropical Fish Keeping Help and Advice
Tropical Fish Keeping Product Reviews
Tropical Fish Market Place
Tropical Fish Keeping Community
Think Fish © 2004-2022 | Tropical Fish Forum - Everything you need for your Tropical Fish hobby
Legal | Contact Follow Think Fish on: