michael.qian Posted July 5, 2007 Report Share Posted July 5, 2007 Hi all, me again When I change 15% of the water weekly in my 135L tank, should I be worried about the temperature fluctuation? When the new cold water comes in and mixes with the warm water in the tank the temperature usually drops 2 degrees very quickly. The heater has to slowly bring it back up again. Mainly worried about the neon tetras and the clown loaches (might be getting 3 today). Would this sudden drop in temperature stress them out too much? Though it will be over in a few hours and temperature will be back to normal. Cheers Quote Link to comment Share on other sites More sharing options...
coelacanth Posted July 5, 2007 Report Share Posted July 5, 2007 are you using a bucket to refill the water? Just mix hot and cold water to get an approximate temperature Quote Link to comment Share on other sites More sharing options...
michael.qian Posted July 5, 2007 Author Report Share Posted July 5, 2007 I've read somewhere, can't remember where, that hot water from the tap contains more ammonia? Don't have an ammonia test kit should really get one, got a pH and nitrate. Quote Link to comment Share on other sites More sharing options...
Bluetom Posted July 5, 2007 Report Share Posted July 5, 2007 changing 15% shouldn't change it too much. wouldn't be any more than rain in the wild I would have thought Quote Link to comment Share on other sites More sharing options...
Bluetom Posted July 6, 2007 Report Share Posted July 6, 2007 don't think it would contain any ammonia but there could potentially be all sorts of things in your hot water cylinder and the pipes are copper rather than plastic. However copper is relatively inert so unlikely to leach much. Quote Link to comment Share on other sites More sharing options...
alanmin4304 Posted July 6, 2007 Report Share Posted July 6, 2007 The reason the local authorites supply water that is slightly alkaline is so it will not corrode copper or brass in the plumbing system. Quote Link to comment Share on other sites More sharing options...
alextret Posted July 6, 2007 Report Share Posted July 6, 2007 I make 30% changes using water straight from an outside pond in Palmerston North, with no ill effects. Quote Link to comment Share on other sites More sharing options...
Caryl Posted July 6, 2007 Report Share Posted July 6, 2007 I used to do 50% water changes on my Malawi tank with the garden hose. The temp dropped about 10C. The fish played in the current and loved it. Not sure about clown loaches though as they are sensitive to water conditions. Nothing wrong with mixing hot and cold water in a bucket. Quote Link to comment Share on other sites More sharing options...
HaNs Posted July 6, 2007 Report Share Posted July 6, 2007 I just did a 50% change on my tropical with the cold hose and the temp only gets down to 20c. My tank is 300L. My fish dont mind it Quote Link to comment Share on other sites More sharing options...
Adrienne Posted July 6, 2007 Report Share Posted July 6, 2007 I just use water straight from the hose for my fighters with no problems. If the temp drops too much I fill other tanks while the heater does its magic and then finish filling the tank later. Quote Link to comment Share on other sites More sharing options...
David R Posted July 6, 2007 Report Share Posted July 6, 2007 I've been doing big weekly water changes on big tanks with clown loaches for years without any ill effects. Never seen the water drop more than about 5*C. Quote Link to comment Share on other sites More sharing options...
michael.qian Posted July 6, 2007 Author Report Share Posted July 6, 2007 Just got the clown loaches, gotta say they look awesome, much better in my tank than in the tank at Jansens They still in the pet shop bag at the moment going to keep them in there for 20 minutes, hope they don't get whitespot, tank temperature is at 24.5 but I turned the heater up to 25 a while ago so tonight the tank should be at 27, my heater is 2 degrees out. Anyway hope they'll be ok. Quote Link to comment Share on other sites More sharing options...
michael.qian Posted July 6, 2007 Author Report Share Posted July 6, 2007 Geez they ARE pretty shy. As soon as put them in the tank within 2 second they were out of my sight and found themselves a place to squeeze into. Quote Link to comment Share on other sites More sharing options...
HaNs Posted July 6, 2007 Report Share Posted July 6, 2007 Geez they ARE pretty shy. As soon as put them in the tank within 2 second they were out of my sight and found themselves a place to squeeze into. Many fish are like this in a new environment. You should start seeing them more in the next few day's Quote Link to comment Share on other sites More sharing options...
michael.qian Posted July 6, 2007 Author Report Share Posted July 6, 2007 They are out now, though still sticking close to the cave they were hiding in, already find them amusing. Quote Link to comment Share on other sites More sharing options...
markoshark Posted July 6, 2007 Report Share Posted July 6, 2007 How many did you get? Quote Link to comment Share on other sites More sharing options...
AMAZONIAN Posted July 6, 2007 Report Share Posted July 6, 2007 Oh, how we all try to beat "Mother Nature".. :roll: When I do a water change the water I put back in the tank is never the same termperature as that which is taken out. Two or three degrees colder is about what "I" aim for. "TO BE GOOD AT ANYTHING", you have to think like that which you are imitating. In other words.....THINK LIKE A FISH. When it rains in nature, the water is COLDER than the river, creek, or stream that it is falling into by several degrees. 8) A smart Fish thinks..."Hmmmmmmmmmmm, Start of the rainy season, plenty of food available so I might go looking for love and there will be food aplenty for the babies" Just ask me how I get to breed and raise "ANGEL FISH" so easily. Think about it. Quote Link to comment Share on other sites More sharing options...
HummingBird Posted July 6, 2007 Report Share Posted July 6, 2007 I never worry about the temperature difference of a water change either. My thoughts are along similar lines to Amazonian's, it's just like rainfall in the wild. Quote Link to comment Share on other sites More sharing options...
michael.qian Posted July 6, 2007 Author Report Share Posted July 6, 2007 I got 3. They are really super active, darting up and down on one side of my tank for about 2 hours now. Quote Link to comment Share on other sites More sharing options...
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