Proof You Don't Need To Worry About Temperature During Water Changes

[@mattcurtin3185]

Dani just wanted to say you’ve completed made me rethink everything I did in the hobby. Much less stress and more enjoyment. I’ve gotten back into fish tanks after being out for a few years. I love all your videos super informative and entertainment keep up the vids.

[@ethanterchowitz3496]

For hardy fish, it probably doesn't matter but for cardina shrimp of weak fish probably don't recommend it.

[@tonyhind6992]

I use to worry about this until a few months back.

[@Alex-oq5qd]

I remember when I first started a couple of years ago I used to stress alot about this

[@wellbuster4979]

I doubt it would make much difference , but the reason you had higher temps in the first 2 readings of tap water was it was coming from the pressure tank which had time to warm up, once your pump kicked on you started to get groundwater which is why the last three temps were all the same. If you have tripped on your pump after only using 4-5gallons something is wrong. Trying to help.

[@FreeSwimmer]

For years I would simply refill with tap temp.. No questions. I have my waterchange system now, that comes from other room. I have a faucet with hot/cold options. I run it through wall and into waterfilters above tank. Then it goes into tank. A simple twist of knobs and lifting of handle. The reason I run it warmer is for less work on the heaters. My waterchanges are 200 gallons every 2 weeks.

[@michaelkampfert639]

I still try to match the temp. With guppies it doesn’t matter. But in tropical tanks unnecessarily “stressing” the fish is bad practice. I use chlorinated city water that I treat with seachem prime and stability. Those products keep me at ease. Also I just feel and know exactly where I have to put my mixer valve to match temperatures… I’ve never done brackish tanks so I could see how this would be more of a issue.

[@MrJTHines]

Great video, and that tank is fantastic!

[@plantedtankz8988]

I just try to get it close to aquarium. I never test the temp. Been doing it this way for 16 years. Never an issue

[@chrismeredith3626]

Been doing that for yrs as well..

[@LeeDfined]

Same. I keep my tanks based off of "feel" vs technical knowledge and gadgets.

[@davidsamsell2031]

I really enjoy these style of videos. It proves many things & provides practical information. Given a final 4 degree aquarium temperature difference @ 20-25% water change, using around 20 degree cooler water is about right. When I change water it is about an 80% water change and just feeling the water, when refilling, without a thermometer will get me very close (+ or - 5 degrees) from original starting aquarium temperature. That is close enough for my type of fish & never had an issue. Good video. 👍📺😎

[@DivinityinLove]

The reason I searched for water temp stability during changes is only because of this new issue that I introduced Amano shrimp into my tank and they seem to be attacking guppies, people on forums said it is mostly likely due to the fish going into shock after a water change from temp fluctuations, even 3 degree change from 28C to 31C which I wouldn't think is an issue, maybe can stress the fish and make them vulnerable to attack. I'm debating as to whether I should now SINK the heater (rather than turn it off and let water get cold whilst draining with the lid off, the water gets cold pretty quickly somehow), and then check temp of water going in with a thermometer, or better yet, add 5 litres and wait, then add another 5 and wait, as my pump won't really pump any slower than i use it at now to drip acclimate, and water changes would take all day...... ORRRR, just feed the amano shrimp to my goldfish and be done with them fxckers.

[@DanHiteshew-oneandonly]

Your first mistake was taking advice from forums. I seriously doubt (in fact I know) that a few degree temp change isn't going to bother your fish, let alone "shock" them. I'd try adding more food on the bottom for the shrimp to eat. I doubt they actively hunt if they don't need to.

[@TobyCreates]

I typically just put lukewarm water into any of my tanks, even the specifically heated ones. Not too cold or warm to shock them, and the heater will take care of the difference

[@rezaai8706]

Thanks

[@קרןחיון-ו1ש]

very very important!!!!!

[@MrHominid2U]

I have a 50 gallon container with pre-conditioned heated water I have ready for water changes. It's always better to condition water before adding it to the tank and I think I'll stick with keeping it the same temperature too.

[@mentaldk329]

Have about 50 guppies crowded in a tank that i accidentally unplugged the aquarium heater to in an unheated room. Next morning at 11am my 8 yr old told me the fish dont look good. Tank was at 51 degrees with many fish lethargic. I took 20% of the water out and threw in water ftom the other fish tanks and replugged heater. Did not lose 1 guppy.

[@SavingPrivateRyanHands]

People keep guppies in frozen over ponds some places. I bread a ton outside until November in Maryland in 2020

[@timw.8225]

Dont try this at home kids. It would be a vast difference if the water change was of a larger amount.

[@IsabellaM._]

I try to get as close as possible. But it's true that in the wild the water temperatures probably fluctuate.

[@gqwarrior6694]

For some set ups, a few degrees change isn't a big deal but for others, it can be extremely stressful or fatal for the fish. I imagine the direction of the temperature swing makes a big difference to. For example, in a heavily stocked rift lake tank & assuming water is added to the tank at a "normal" rate, dropping the temperature by more than about 2 degrees celcius, is going to cause significant stress to the fish. If that temperature drop is about 5 degrees celcius, you're very likely to be losing fish unless you add the cooler water over several hours. If we take the same set up but are adding warmer water, not only are the same temperature swings going to stress the fish but the lower o2 levels are going to increase that stress & increase the risk of fatalities. Easy way to tell if fish are stressed is to look for sudden changes in behaviour & color. If the fish become lethargic, are all sitting on the substrate, have all moved to the surface or have very pale colors, then that is stress & not a good thing for the fish. In a marine tank, altering the temperature by even 2 degrees celcius, fish deaths are likely. Inhabitants of a brackish tank would be most suited to handle larger temperature swings as they originate from an environment where big temperature swings are a daily occurrence. Most but not all tropical fish can handle a few degrees swing without too much trouble but can still be significantly stressed & taken to extremes, fatalities are a distinct possibility. In most cases you don't have to be precise but in others you really do need to have the new water very close to spot on. I run multiple rift lake tanks & for those, I make sure the temps are within one degree celcius. I do so because before I was matching temps, I could see the fish being stressed with just a 2 degree celcius change in tank temps. A 4 degree change cost me 6 fish. For my SA/CA & community tanks, a 3 degree celcius change is tolerated just fine but any more than that & the fish are clearly stressed. I'll stick to matching my temps fairly closely.

[@fishmanc5357]

I used to just use cold water from the tap, then I started temp matching by hand, then I got thermometers and used to mat h exactly, now I temp match by thermometer within 3 degrees. ... I'm just gonna go back to using my hand... I started to worry because of what I was seeing online. This is a where a little knowledge can be dangerous.

[@anahbopp]

I’m confused why anyone would think this is a problem... Mother Nature isn’t checking the temperature before a rainstorm pouring down and sometimes over flowing lakes/rivers

[@xSuicideDeMoNx]

Fish dive down to the right temp.. stay confused

[@CarolynnMc01]

I only check the exchange water temp when my hands are freezing because i can't tell. Otherwise, i don't check the tap water first.

[@conman20000]

I do 50 percent water changes though so I would be more weary of doing this.

[@DanHiteshew-oneandonly]

Yes, the more water you exchange, the more the temp will shift.

[@Jstroman221]

I think fish can handle a temperature drop Much better than a temperature increase which is something you should pay more attention to when adding/removing water from our tanks.

[@jesuscichlidtank]

ive never worried about water temp during water changes, since 1993

[@DanHiteshew-oneandonly]

Lol Probably never had any problems either.

[@T.J-and-Soul]

I believe this to be true and if you fill up very slowly there is even less difference. Good experiment mate thanks 👍

[@DanHiteshew-oneandonly]

Yeah, even if the temp drops by several degrees, it's only for a short while. It's not the same as keeping fish in cooler water.

[@T.J-and-Soul]

@@DanHiteshew-oneandonly Temp can shock I assume but temperature effects metabolism etc and I've often thought temps change at depth. I think half the aquarium hobby is full of wives tales. Never go from ph8 and drop em in 6 they physically can't deal with the pressure but apart from that I don't worry too much. After learning from you and Father fish my fish keeping has been drastically simplified. Thank you Dan you have almost changed my life haha 👍✌😎🤣

[@DanHiteshew-oneandonly]

@@T.J-and-Soul Lol

[@T.J-and-Soul]

@@DanHiteshew-oneandonly I caught a short finned eel last night. Set up a tank took hours acclimating. Got up today and he was gone! Tank has a lid but has a1 inch hole where the old inbuilt filter was. Dead eel on the grass outside the shed!!!

[@DanHiteshew-oneandonly]

@@T.J-and-Soul Oh that's a bummer.

[@SavingPrivateRyanHands]

No yo It is

[@rajveersinghbabra3134]

Dan u should make video like care and thing for particular fish in particular video I would get double views and likes It would also help increasing subs

[@BarrySuridge]

Helium? 😀😁😂🤣

[@lynnlutz9883]

Sounds too risky to me. Losing an entire tank of fish due to ich because you were too lazy to acclimate the temperature and stressed out your fish might change your mind. But that's me. I use a mix of rain water (soft) and well water (hard). The well water comes out of the tap with air bubbles which I believe are undissolved gases, so I let the bucket sit for 24 hours with a submersable heater and airstone.

[@DanHiteshew-oneandonly]

What does temperature during a water change have to do with Ick? I'm not introducing parasites.

[@HalfManHalfCichlid]

@@DanHiteshew-oneandonly the ich parasite is an opportunistic organism.. prevalent in most aquatic systems just waiting for a weakened fish to attack.

[@DanHiteshew-oneandonly]

@@HalfManHalfCichlid No it's not. It's a parasitic organism that has to be introduced to the tank. It can't live without a host, so it's either infecting your fish, or it's not in the tank.

[@lynnlutz9883]

@@DanHiteshew-oneandonly I respectfully disagree. (I have 30 some years of experience so I'm no novice.) I've had the rare so-called "spontaneous" ich breakouts when there were no "new" or recent introductions to the tank. Its a myth that the paracyte isn't always present (like beneficial bacteria). It just may not be present in the numbers neccessary to cause an obvious infection, until a stressed or weak fish becomes vulnerable to allow the massive reproduction necccessary to become an active host resulting in infection. This is how "spontaneous" ich infections occur. It could be any sudden change in water parameters, including a sudden chill of water temperature. It's just not worth being lazy or sloppy in my humble opinion.

[@lynnlutz9883]

@@HalfManHalfCichlid Agreed.

[@Shaden0040]

you only want a 2-2.5 F degree drop during a water change. or about 1C degree frop. But swimminng between major temperature changes is normal and short lived.

[@themidnightlobster6281]

A cold shock to the water could cause it to heat up faster