Your R/O unit does not appear to be working as well as it should be. There shouldn't be any nitrate in R/O water. And your pH should not be dropping that low either.
R/O water is regularly used on marine tanks because it is meant to be free of nitrates and phosphates. The fact you have nitrates in the R/O water is a concern and might indicate the R/O unit needs servicing.
A pH of 6.2 is not an issue for Bettas but the pH should not be dropping as much as it is. Pure water like distilled or rain water, has a pH of 7.0. So why your R/O water is dropping to 6.2 is unknown. It could be your water supply is naturally acidic and the water company is adding things to artificially raise the pH. These substances are then being removed from the water by the R/O unit and the remaining water is acidic.
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If you do buy test kits, check the expiry date on them and don't buy kits that are kept near a heat source or in front of a window.
Keep test kits in a cool dry place away from light to maximise their shelf life.
*NB* Keep test kits away from children and animals because they have poisonous chemicals in them. Wash test phials under tap water after use. Wash hands with soapy water after using test kits.
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If you aim the filter outlet towards the surface, it might create less water movement in the tank and the fish will be less likely to be drawn into the filter.
Hello Colin, it is 10pm here in California, and my betta seems to be in a very bad shape right now.
This morning, he seemed much better, as the picture I posted. I kept the filter on, but I kept monitoring him. I can't place the filter any lower because its rectangular shape. The bottom part of the filter where sucks the water in, is already on the ground. I placed big gravels to kind of block the filter little bit.
However, it is weird, my betta seemed really sick specially during night. I noticed that last night too. Last night he was not really moving, then this morning he was much more active and healthy.
Starting from late evening today, he paused time to time again, so I thought he was just more tired.
then around 8pm, I noticed his right Pelvic fin turned upward!
please see the picture I post. The first picture is 10am, then the pelvic fin turned upward is 8pm.
I researched online but couldn't find any answer. There was a posting similar to my betta's fin, and someone said it can be the start of fin rot?, but he wasn't sure.
I looked inside the tank but there is no piece of his fin. I ran to Petco before they close hoping partial water change will help. I bought Imagitarium Betta water 0.26 gallon because I can't trust my tap water nor my B/O water right now.
Petco also did current tank water test, and said everything is ok except ph level is little high (like 7.8)
Petco assistant said it looks like start of fin rot from stress, so gave me Betta fix which is Melaleuca oil (cajeput oil 0.2%) I told betta's history. Petco assistant said API Quick Start is not for bettas, that maybe only at the beginning of cycling or making the tank for the first time, and it could have created so much good bacteria, and that even good bacteria consume oxygen and this can make less oxygen in the tank. Few days ago, when I went to petsmart, their representative suggested to put API Quick Start because my R/O water doesn't have any good bacteria, so I added it into my tap water when I added partial water change with the tap water. Some youtubers add this product every time they do water change. Maybe adding it was a bad idea? so I was even scared to put the API betta fix.
So I just did 10% water change with Imagitarium betta water. it is already conditioned and premade. so without adding anything, I just pre heated before adding into the tank.
An hour later 10pm, his fin came back to normal. I took out the filter to make him less stressed as possible. However he is almost lifeless. Does not really move, mainly float with his head up and sometimes floats on his side. And his belly looks wavy, I don't know if this is normal. I attached current pictures.
Is he in critical condition? Is there anything I can do? or just leave him in peace.