water changes: how do u make the new water the same temp? - Aquarium Advice

Bubble_B0y · 09-22-2005, 10:01 AM

I was wondering...

aquarists say to have the 'new water' the SAME temp as the tank water.

How do u do this ??

do i have to buy another heater and thermometer for doing water changes too??

PsiPro · 09-22-2005, 10:09 AM

I just guess at it... but i have yet to get it right.

Jchillin · 09-22-2005, 10:22 AM

It's not really as hard to do as it seems. If you are using buckets, it easier. A thermometer placed in the bucket while filling will suffice.

If you are using a python, it's a little trickier. Before closing the valve attached to the faucet to allow the water to flow, hold the thermometer under it until you get a temp match.

Over time, you will be able to judge by touch.

Tiffi · 09-22-2005, 10:25 AM

Since I am only changing around 25%, I fill it back up with a little bit colder water. Guppys and Amano Shrimp for example love that. They swim directly into the cool stream

!

Xzap · 09-22-2005, 10:50 AM

I use a Python, my tap comes out at 75 degrees, my tank is set to 78, so I just refill from the tap as low as it will go.

Dave

malkore · 09-22-2005, 10:52 AM

with most fish, a few degrees isn't a huge stress on their system, and the existing water in the tank will even things out a little, especially if you do more 25% sized w/c.

anything over 50%, and you should try to get close. having a digital thermometer (like the Coralife one) works great because you can get a reading in seconds, and its more accurate than the glass bulb thermometers.

**Zagz** · 09-22-2005, 08:36 PM

Over time you just get used to the temp as JC said. I use a python as well and I can tell by touch.

BrianNY · 09-22-2005, 08:48 PM

Agreed with most of what has been said. You don't need to make this an exact science. After a while you'll get a feel by touch of what is right. A few degrees in either direction won't stress your fish at all. If I err, I try to do it on the warmer side.

Aquarium Freak · 09-23-2005, 12:00 AM

I have a water softner so I have to use really cold water so it isn't soft. I usaully just let it sit overnight to warm up and it is pretty close and I just dump it in its not a major temp drop just like 1or2 degrees and my fish have been fine over the years.

Good Luck

Bubble_B0y · 09-23-2005, 12:27 AM

what about the heater ???
i'm scared the temperature change may crack the heater ??

09-22-2005, 10:01 AM	#1
Bubble_B0y Aquarium Advice FINatic Join Date: Jun 2005 Location: Sydney Posts: 762	water changes: how do u make the new water the same temp? I was wondering... aquarists say to have the 'new water' the SAME temp as the tank water. How do u do this ?? do i have to buy another heater and thermometer for doing water changes too??

09-22-2005, 10:09 AM	#2
PsiPro Aquarium Advice FINatic Join Date: Sep 2005 Location: FL Posts: 546 Images: 2	I just guess at it... but i have yet to get it right. __________________ The Aquarium Wiki! Affordable Webhosting by Psi Productions

09-22-2005, 10:22 AM	#3
Jchillin Aquarium Advice Addict Moderator Emeritus Join Date: Nov 2004 Location: New York, NY (The Big Apple) Posts: 12,976 Images: 47	It's not really as hard to do as it seems. If you are using buckets, it easier. A thermometer placed in the bucket while filling will suffice. If you are using a python, it's a little trickier. Before closing the valve attached to the faucet to allow the water to flow, hold the thermometer under it until you get a temp match. Over time, you will be able to judge by touch. __________________ _________________________________

09-22-2005, 10:25 AM	#4
Tiffi Aquarium Advice Addict Join Date: Aug 2005 Location: first ST-Germany, now TN-USA Posts: 1,052 Images: 19	Since I am only changing around 25%, I fill it back up with a little bit colder water. Guppys and Amano Shrimp for example love that. They swim directly into the cool stream ! __________________ Some time ago in Germany: 2x 15gal tank, 45gal heavily planted Now: 70gal FW, 130W CF, driftwood, black gravel/laterite/flourish tabs/pool filter sand, pressurised CO2, power reactor, 200W = 250W heater, Fluval 304, Eheim prefilter; pH 7, kH 5, gH 9, CO2 ~20mg/l Plants: Cryptocoryne beckettii, wendtii "red", Giant Vals, Nymphaea lotus "zenkeri", Anubias nana "petite", Echinodorus "ozelot", Dwarf Sag, Hygrophila polysperma, Rotala rotundifolia, Limnophila sessiliflora Fishes: 2 Mikrogeophagus ramirezi, Endlers, 4 Otocinclus vittatus, 1pair Pelvicachromis pulcher, 5 Corydoras panda

09-22-2005, 10:50 AM	#5
Xzap Aquarium Advice FINatic Join Date: Jun 2005 Location: Triad, North Carolina Posts: 577 Images: 45	I use a Python, my tap comes out at 75 degrees, my tank is set to 78, so I just refill from the tap as low as it will go. Dave __________________ 10 [acronym:78f832904f="Gallon"]gal[/acronym:78f832904f] planted with 1 male betta. Mostly anacharis. 29 [acronym:78f832904f="Gallon"]gal[/acronym:78f832904f] planted community 1.9 [acronym:78f832904f="Watts Per Gallon"]wpg[/acronym:78f832904f] 90 [acronym:78f832904f="Gallon"]gal[/acronym:78f832904f] planted community 2.9 [acronym:78f832904f="Watts Per Gallon"]wpg[/acronym:78f832904f]

09-22-2005, 10:52 AM	#6
malkore Aquarium Advice Addict Join Date: Dec 2003 Location: Nebraska, USA Posts: 6,540	with most fish, a few degrees isn't a huge stress on their system, and the existing water in the tank will even things out a little, especially if you do more 25% sized w/c. anything over 50%, and you should try to get close. having a digital thermometer (like the Coralife one) works great because you can get a reading in seconds, and its more accurate than the glass bulb thermometers. __________________ Visit my aquarium pages - see specs on my tanks, and photos of how they've evolved My other passion: TheNinja 500R - updated 9/18/05

09-22-2005, 08:48 PM	#8
BrianNY Aquarium Advice Addict Moderator Emeritus Join Date: Sep 2003 Location: NY Posts: 4,259 Images: 18	Agreed with most of what has been said. You don't need to make this an exact science. After a while you'll get a feel by touch of what is right. A few degrees in either direction won't stress your fish at all. If I err, I try to do it on the warmer side.

09-23-2005, 12:00 AM	#9
Aquarium Freak Aquarium Advice Freak Join Date: Aug 2005 Location: Saskatchewan, Canada Posts: 238	I have a water softner so I have to use really cold water so it isn't soft. I usaully just let it sit overnight to warm up and it is pretty close and I just dump it in its not a major temp drop just like 1or2 degrees and my fish have been fine over the years. Good Luck

09-23-2005, 12:27 AM	#10
Bubble_B0y Aquarium Advice FINatic Join Date: Jun 2005 Location: Sydney Posts: 762	what about the heater ??? i'm scared the temperature change may crack the heater ??

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