Quoted from gliebig:

No current pics of my tanks on my phone, but here are some of my koi pond. It's around 7k gallons.[quoted image][quoted image][quoted image][quoted image][quoted image][quoted image][quoted image]

Quoted from Spyderturbo007:

If you need any help, I'm more than happy to walk you through things. I'd highly recommend getting an ammonia test kit, some ammonia safe and some nitrifying bacteria.
I applaud what you did for the poor little fish, so please don't take anything the wrong way. I'm just trying to make sure you understand what's going to happen in the tank so you can give the best life to your new little buddy.
As he poops in the tank, the poop will create ammonia which is highly toxic to the fish. If it doesn't kill him, it will cause his gills to burn. The tank needs to build up nitrifying bacteria that will convert the ammonia to a less toxic Nitrite and finally to Nitrate. Nitrite is safe unless you're at really high concentrations. This bacteria growth is called the Nitrogen Cycle.
Since you don't have any nitrifying bacteria, you're going to get an ammonia spike followed by a Nitrite spike. The best thing you can do is to seed the tank with nitrifying bacteria, monitor the Ammonia and then dose an Ammonia neutralizer if the concentration spikes. That will protect the fish.
I'd recommend the following;
Ammonia Neutralizer:
amazon.com link »
Nitrifying Bacteria:
amazon.com link »
Tap Water Conditioner:
amazon.com link »
API Test Kit:
amazon.com link »
You always want to condition the tap water when doing a water change and make sure it's at the same temperature as his tank.
Also, if you're going to feed him dry pellets (which are fine), you'll want to soften them in tank water for a few minutes prior to feeding. Betta's are known to have issues with dry food. It causes them to become bloated which can lead to death if not treated, so softening the pellets is the easiest thing to do to prevent that from happening.

Quoted from Crash:

I'm just going to put this here.

Quoted from ForceFlow:

I still see them at certain price chopper (aka market32) supermarkets.

Quoted from ForceFlow:

Yeah, in the northeast.