Ro/Di and Low PH

[michalm]

Hello,

I have 2 Black Arowana and 3 Stingrays.

I have automatic exchange water with Ro/Di filtration. My PH is very low: 6.0 - 6.3. Fish are fine, but what do you think, should I rise a PH in my tank or leave like that ? If rise, what is the best solution to do this in an automatic way ?

Thank you

 

[Kr0wn]

your aros should be fine - they can survive in water with a pH of 6 to 7. not so sure about your stingrays though.

 

[michalm]

Stingrays are fine with PH 6...

It is not about "survive", it is about what will be the best ! and how to do this...

Thanks

 

[Chaitika]

Does the ph stay consistent? If so, I wouldn't worry too much.

You can always buffer your water with coral gravel in the sump or something similar, but if you start to mess with parameters, there's a chance you will make them inconsistent. And that's not a good thing.

 

[dmopar74]

ro/di isnt too great for FW setups as it strips the water of everything. in a sw setup that is fine as the saltmix will place what needs to be in the water, but fw not so much.

why are you using ro/di anyways?

 

[Rawrzer]

If the fish are exposed to that low of pH slowly and they get used to it then they will be fine. otherwise I'd add pH up or something to get it up to neutral

 

[Burtess]

I don't think it is the low pH that would be the problem, it would be the pH stability.
As mentioned by dmopar74 above, RO or DI water has virtually no salts in it.
This will cause problems with pH buffering..... the water will have very low resistance to pH change.
Are you having problems with pH stability?

Burt

 

[michalm]

Does the ph stay consistent? If so, I wouldn't worry too much.

You can always buffer your water with coral gravel in the sump or something similar, but if you start to mess with parameters, there's a chance you will make them inconsistent. And that's not a good thing.

I heard about corals... For now I will stay like that, without corals etc..

ro/di isnt too great for FW setups as it strips the water of everything. in a sw setup that is fine as the saltmix will place what needs to be in the water, but fw not so much.

why are you using ro/di anyways?

In my tap water I have lots of silicate, and high level of silicate makes problem with my NO3 Remover - http://www.monsterfishkeepers.com/forums/showthread.php?t=180385&highlight=scrubber , don;t want to grow a right algae.

But I'm using Ro/Di system for more than 6 months, and so far so good. I think that fish are happy and healthy My automatic water exchange with ro/di filtration - http://www.monsterfishkeepers.com/forums/showthread.php?t=317516

If the fish are exposed to that low of pH slowly and they get used to it then they will be fine. otherwise I'd add pH up or something to get it up to neutral

Thanks, If I will have to I will use a corals...

I don't think it is the low pH that would be the problem, it would be the pH stability.
As mentioned by dmopar74 above, RO or DI water has virtually no salts in it.
This will cause problems with pH buffering..... the water will have very low resistance to pH change.
Are you having problems with pH stability?

Burt

Thanks, well...it is stable but is very low... It is like 6.0...
I was using to rise PH a Baking Soda, but it is no good because it make my water PH very unstable... from 6.0 to 6.5... and next day 6.3... etc...