, thank you for being kind answering me. I am sorry I do not answer at once, to tell the truth I wish already I had 1 fish, not 3. It is pretty difficult to take care about them if you care.
Ok, what I did. I let Blueno in tank, he really loves it. He looks healthier and happier tha before.
I tested water the day before yesterday.
There reading were:
Nitrate between 0-5.0 ppm
I did 40% change that day.
I did not test water yesterday
as I test water for two other fishes for ammonia every next day. And I must say these tests are pretty harmful for humans too. The smell of chemicals really iritates me when I wash those glass tubes. Also those API glass tube do not cap very well, when I shake them the leak...Do you know what other tubes can I use for those so they would not leak?
So test results today.
PH tests results were weird, so I think mybe I made mistake.
PH -more than 6.7
High PH -less than 7.4
I am not sure if I have to do large water change today. I will do 25% and will wait for your answer. If I need to do larger water change, please advise it.
My other fish Cherryk has a fin rot and sits isolated in small jar (because I put it to float in tank for keeping the same temperature) with medicines 2nd day now and 100% water change daily. Poo guy, he does not like it...Hope he will survive that. I even gave gim blood warms soaked in garlick. He was pretty smart to spit them out and wait untill they will lose garlic taste...
By the way I have a lot of plants in tank, some are melting (crips and Ahanaris), maybe this causes Nitrates high.