01-08-2011, 06:36 PM
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Originally Posted by CrankyFish84
Ok so, The reason I started doing 100% changes on the unfiltered/unplanted/no substrate tanks (they just have a heater & a betta log in them, and are sizes 2 to 5 gallons)...Is because some people on the forum said 50% changes would not remove all the ammonia residue. So that scared me & now I rinse the whole inside (and heater/betta log) of those tanks with hot water to make sure I get it all off.
Is this info incorrect?? I know people have their own ways of doing things & respect that, but sometimes I get conflicting information.
Now, on the filtered & cycled & planted tanks, I do 50% once a week.
I don't remove these guys during those changes, except if I have to rearrange a decoration or planting.
I suspect the thinking behind such advice was that with no filter there was no place for nitrifying bacteria to colonize, and I would agree that with no substrate or plants (live or artificial) this is even more of a concern. But the fact is that the bacteria will colonize any surface under water, including the tank walls and bottom, and with only one Betta in the tank you will not have an issue with ammonia or nitrite. So, I would recommend you switch to 50% water changes in these tanks. The stress of moving the poor fish every time is to me a more important concern. Once you have live plants, even just some stem plants allowed to float (the Betta will love this, very natural), things will be even better.
On the other tanks, unless it is a major upheaval of the tanl's aquascaping, I would leave the fish in when you move decor or plants. I always do this (unless as I say it is major, like changing the substrate) and it is comical to see many of the fish inquisitively inspecting every change as soon as my hand leaves the area, and often while I am still in there. They are of course looking for food in the stuff stirred up as much as anything else. But this again is much less stressful than moving them out and back.