I've heard from multiple sources that before you do a water change you should condition the water you're going to be adding to the tank 24 hours beforehand and let it sit so the chlorine can evaporate. However, when i asked the pet shop guy about water conditioners, he said that they instantly make tap water suitable for bettas. Plus the bottle says it neutralizes chlorine and other harmful substances in tap water, so why do so many people say you need to let the water sit? Do I really need to let the water sit or can I use it immediately as long as it's conditioned before I put it in the tank?
I will tell you what others have told me. It is more important to make sure that it's the same temp as your tank than to let it sit overnight. What sitting it does is let harmful chemicals evaporate off the top. Water conditioner binds cloriene, clorimine, and other things to makes them harmless. It is an either/or thing really
Also, some other internet things...
1. Salt is bad long term for fish with laberanth organs or scaleless. It's good to treat health issues for up to 10 days, but that's it
2. Bettas do in fact need a heater. In fact, most fish and inverts do! Try to keep it 78-80 degrees F, but 76-82 is fine
3. The can NOT be happy in a tiny tank. Much less healthy. The minimum tank size for 1 is 2.5-3gallons. With shrimp or a snail, 5 gallons. Other tanksmates or a group of females, 10 gallons
4. Clean "looking" water is not the same as clean water. Clear water could have fatal amonia levels. Do lots of pwc and testing (API Master Kit)
5. Bigger filters don't mean you can overstock your tank
The answer is simple, you are getting multiple answers to your questions because there are multiple ways to treat tank water.
If you don't want to use conditioner, you can leave water to sit for 24-48 hours and let the chlorine evaporate out of the water.
If you do want to use conditioner, you can add the conditioner and then immediately add the treated water to the tank.
If you want to use conditioner and time, then you can condition that water and then leave it to sit so the inactivated chlorine can evaporate out of the water.
Personally, I condition my water and then add it immediately because my tank water isn't the same temp as my bedroom and I have a bad habit of spilling water everywhere. The faster I get the water from the faucet to my tanks, the better. XD
While this may work for chlorine it does not work well for chloramine, which is also something that will kill your betta. Unfortunately I learned this lesson the hard way. Water varies region to region, especially if you're in the city always use conditioned water for changes.
I think that for most people who suggest conditioning water and letting it sit out, the goal is so that they know the water is room temperature before adding it. This method works fine if your betta doesn't have a heater. I'm not saying bettas shouldn't have a heater, but that's how I used to do it when I was a kid.
I tend to let mine sit, just so it can get to a stable temperature. Our water temperature is unpredictable in the winter. One minute it's scorching hot, the next it's painfully cold. Our water is also filled with tons of air, so even if it feels warm on the outside, sometimes it's ice cold in the middle or too hot because of a strange air pocket thing. So, it's my personal preference to leave it sit, so it's all the same temp.
If you're using a good water conditioner and your water temp is stable, you don't need to let it sit.
You always need conditioner because letting it sit 24-48hours won't remove heavy metals or chloramines (your conditioner should say it removes these).
Reasons to let it sit include an unstable tap ph (one where the ph of your tap water is one thing, but once it sits in an aerated and heated buck it falls or climbs to something else) or also those gas bubbles. Some people are afraid it could build inside the fish, but I've never seen it happen.
If your tap water ph is unstable, you do need to let it sit. If it's not, then imho it's not as important.
It's always okay to let it sit but then you have to get it back up to tank temp before doing a water change somehow. I keep a dedicated heated fish room, but I and have extra heaters with multiple clean 5g buckets I picked up at Home Depot. The later is what most people do.
Ive never let my water sit. I use a Python on my larger tanks so I just adjust the temp at the tap, add conditioner to the tank and refill. On my smaller tanks that I still use a bucket with, I fill the bucket with water adjusted to temp at the tap, add conditioner and then pour it into the tank. I've gotten to where I can just use my hand to estimate the water temp. I use to drop a thermometer into the bucket to check the temp. Posted via Mobile Device
i don't. x: but that's mostly because i use well water, and conditioner. i DO let it sit for a while while the water in the cup and tank equal out in temperature, though.
I have well water and a tropical tank, so I use at least half a treatment (to take care of other stuff like heavy metals) and add water that is 1 to 2 degrees over my tank so that by the time I get done cleaning my tank and taking out water, it's perfect and I pour it in. Posted via Mobile Device
well, my tanks are all smaller, except my 10 gallon, so i do 100% water changes. x: i use full dose of Prime(two drops per gallon) to take care of the metals and such.
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