[Luichenwai]

I forgot where I read somewhere that someone mentioned that with increase flow in the tank the PH increases....

is this true?

 

[Darkblade48]

It is possible that if you are injecting CO2 (which will lower the pH), that excessive surface agitation (that might be caused by increased flow) could off-gas the CO2, thereby increasing the pH.

 

[Gad]

I forgot where I read somewhere that someone mentioned that with increase flow in the tank the PH increases....

is this true?

Never heard that one before. It's possible depending on certain media in your filtration I guess, but by just upping the flow rate I don't see how.

 

[TLH]

I suppose it's possible. I don't understand it fully but if protonation can occur when enough water to air contact is made it could cause a change in pH, I think. I'm no chemistry expert but I'm willing to bet this sort of thing is so miniscule in the difference it makes and therefore won't have any effect on us whatsoever.

 

[Luichenwai]

I mean, I dont run CO2 in the tank. With the tap water sitting overnight the ph is still around 7.0. I think I'll be ok.

 

[jmhart]

Simply adding more flow will have nothing to do with pH. Gas exchange could effect pH, so if the flow increases gas exchange(via surface agitation or any other method) then pH could change....but it would be due to gas exchange, not flow.