Stagnant Water.

[raptorrex]

Unless you have very old fashioned plumbing, or water pressure that fluctuates so that the temperature could drop or increase considerably while you are filling the tank, it's safe to mix the hot and cold water at the tap. Just add the water conditioner directly into the tank before adding the water. That's part of the reason a python is such a convenience.

I would also that as long as you do not have too much C02 in your water it is safe (tiny C02 bubbles.)

good point. but would the same co2 not be in the cold water tap too? I always used to mixer tap, to match the temp. lol, i avoid the problem though, i use only cold water for changes. unless its more than 30%.

 

[Spishkey]

should you be cautious using warm water from the tap if theres shrimp in your tank (i have copper pipes and have always worried about it leaching into the water and killing my shrimp so boil water instead)

 

[england]

Not sure about copper piping but heard similar things, also shrimps are wimps hehe just yesting

probally best sticking with what works for you

 

[raptorrex]

should you be cautious using warm water from the tap if theres shrimp in your tank (i have copper pipes and have always worried about it leaching into the water and killing my shrimp so boil water instead)

that never occurred to me. but does boiling even get rid of the copper?

 

[Haych]

lol i have a combi boiler, but i am 99% sure i have old copper piping...

 

[JustKia]

lol i have a combi boiler, but i am 99% sure i have old copper piping...

Does your cold water come through the same pipes?
Our water supply comes in on one pipe then once inside the flat it divides and one pipe serves the cold water, the other goes to the combi boiler, so there's almost no difference in the pipework serving the hot and cold =)

 

[Haych]

they have a seperate isolater, but ALL the pipe work coming into the house is copper according my other half...

 

[three-fingers]

I would also that as long as you do not have too much C02 in your water it is safe (tiny C02 bubbles.)

I doubt that would make a huge difference, water from the tap would probably have about the same CO2, any excess would gas off anyway,

 

[DiscusKeeper403]

I would also that as long as you do not have too much C02 in your water it is safe (tiny C02 bubbles.)

I doubt that would make a huge difference, water from the tap would probably have about the same CO2, any excess would gas off anyway,

Most definitley not. My Discus will shed their slime coat and turn black if their is C02 going into the tank, it will gas off but takes around 20 minutes (for me anyways.) This was even while doing 30% w/c. For a while I was using a holding tank to allow the C02 to gas off, before transferring it into the tank. I have now learned that if I run the taps slowly there isn't any C02 in the water. Although I have never actually took stats for pH in tap and tank this is a common problem talked about on Discus forums.

 

[three-fingers]

Most definitley not. My Discus will shed their slime coat and turn black if their is C02 going into the tank, it will gas off but takes around 20 minutes (for me anyways.) This was even while doing 30% w/c. For a while I was using a holding tank to allow the C02 to gas off, before transferring it into the tank. I have now learned that if I run the taps slowly there isn't any C02 in the water. Although I have never actually took stats for pH in tap and tank this is a common problem talked about on Discus forums.

Right. Please link me (through PM) to some of these threads so I can see some data.

Just sounds like people being incredibly over cautious IMO, and mis-diagnosing situations.

We must be talking about this tap water containing serious amounts of CO2 to be causing issues like this...I'm highly sceptical.

 

[DiscusKeeper403]

Most definitley not. My Discus will shed their slime coat and turn black if their is C02 going into the tank, it will gas off but takes around 20 minutes (for me anyways.) This was even while doing 30% w/c. For a while I was using a holding tank to allow the C02 to gas off, before transferring it into the tank. I have now learned that if I run the taps slowly there isn't any C02 in the water. Although I have never actually took stats for pH in tap and tank this is a common problem talked about on Discus forums.

Right. Please link me (through PM) to some of these threads so I can see some data.

Just sounds like people being incredibly over cautious IMO, and mis-diagnosing situations.

We must be talking about this tap water containing serious amounts of CO2 to be causing issues like this...I'm highly sceptical.

PM sent.

As said in the PM, it may all depends on your normal pH and the amount of C02 in the water (how much the pH lowers.) Wish I could have linked you some more scientific data ie. water samples taken with C02 vs. water samples that have been gassed off but admittedly I haven't seen much of this myself. With so many members warning against this there has to be some truth, not everyone can be "incredibly over cautious" and tons of members "mis-diagnosing situations." It isn't that hard to believe IMO. Again, this is a Discus forum. Discus can be a little more touchy with these types of things so maybe this also has something to do with it.

 

[three-fingers]

Cheers, thanks for that.

As PM'd, I see where you are coming from now with regards to pH swing (rather than the CO2 directly affecting the fish), and have read up on this quite a bit before since I keep planted tanks.

But I really don't think it's an issue, pH swings really aren't that much of a problem for fish (they can very easily adapt), it's more the hardness of the water that matters. People who keep planted tanks and inject CO2 see large pH swings overnight, and even without CO2 being injected this happens significantly in heavily planted tanks too. In happens in many habitats in nature as well.

Do remember that the gas bubbles you are seeing aren't just CO2 (they are a mixture of lots of different gasses), and the fact that you are seeing them means that the gasses are no longer dissolved in the water anyway (otherwise you wouldn't see the bubbles). The only difference running the tap slowly would make is that the small bubbles you see will come out of the water because there's less force from the tap to keep them under.

I suspect there was another minor issue stressing your discus at the time (maybe just the water change action itself and now they are used to it).

Discus can be more touchy and, more to the point, expensive so I can see why discus keepers would be more cautious if they are unsure on something.

Though IMO, it's not worth worrying about (I've put discus in tanks that experiance daily pH swings myself and they showed no signs of stress), and many, many people keep discus in such systems too .