I was going to show you how to post a thread but it looks like you figured it out! :) Welcome to the forum.
Many people will say your betta tank and koi tanks are too small. Water quality is really important though, even if the tanks are temporary. While those tanks aren't ideal, water quality can make a huge difference. What is your water change schedule like on your betta tank?
I wouldn't add any tankmates to a 10 gal with a koi in it as they are a high ammonia, kind of "dirty" fish. Most people on this forum don't recommend adding a tankmate to any tank less than 10 gallons for a betta, let alone a koi.
Yeah, i just stumbled onto it..lol lucky me!
The betta tank is just temporary, as this year, instead of Christmas, Im having Fishmas, and im getting either another 2.5 gal or dividing a five gal. Im getting the tanks off of craigslist, so im not sure what opportunities will arise. =]
Actually, right now, Im a bit confused on the water changes for the bettas. They had ick, and seemed to be rid of it, then one started flashing and i noticed a few scales mising from two spots, i researched and from what i read, its external parasites. And now my other betta has a few scales missing. Im treating them with betta revive, and salt, and trying my hardest to raise the temp in the tank, I have a new idea for tomorrow for cutting a hole the diameter of the heater and having half the heating element in the other side of the tank [if that makes sense] hopefully that will help heat up both sides equally. Also im drilling more holes in the divider, for more water flow.
but as for the water changes, ive read that while medicating, if you have a filter [w/o carbon] you didnt need to change the water, it waqs better for the meds to stay in the water.
Im not sure if thats correct?
Actually, my koi, Sickfish, is in the 10 gal with a slightly larger koi, because the other three are much larger, and they werent getting any food!
I do 50% water changes every three days, with top offs when the tank needs it.
Sickfish loves having the other koi there, and they are nearly inseparable. Which is why I would like to get him a tank mate, cause im nervous that once the other koi is moved to the pond, Sickfish will get depressed.
Thing is, I have a very small bedroom. And with two tanks, and my two dogs, me and my boyfriend, itll get crowded if i try to make my tanks too much bigger.
I do have a fifteen gallon spare in my basement i was planning to switch the koi into for my birthday, [I cant think of a cute name, but im turning my birthday also into a free fish supply getting day] and turning the 10 gal into a triple tank for bettas, and getting a female for the middle. My birthday is in early February.
My goal is to get the two males i have healthy and free of sickness before i upgrade the tanks. So, think of thier tank as a hospital tank. =]