URGENT: How much bleach per gallon of water to be dechlorinated and used in a fish tank?

[KittenFishMom]

I have to a very limited time to get back to my Mom so I am post this as Urgent. 

Wrencher_Scott recommended adding plain bleach in the well water that is contaminated with coliform because it would be faster than boiling the water. He did not say how much bleach per gallon to use for water contaminated with coliform to be dechlorinated and used in the fish tank. I sent him mail, but he is no longer logged on. Anyone know how much bleach it would take?

[Fish Folk]

Clarity: we're talking about Coliform bacteria, correct?

Here's an article: https://extension.uga.edu/publications/detail.html?number=C858-4&title=Disinfecting Your Well Water: Shock Chlorination

Suggests 3 pints / 100 gallons. So that's 1 pint / ca. 33 gallons. ca. 1/3 pint per 10 gallons. 1/6 pint per 5 gallon bucket.

You'll need to let that sit awhile - 12-24 hrs.

You'll need to hammer this with Prime or some strong dechlorinator before using in your aquarium.

Hope you've got a plan for treating your well. That's where the issue needs to be resolved.

For me, I'd skip water changes awhile if possible.

[Guppysnail]

Many years ago my parents had well issues. They treated with hydrogen peroxide. I just did a quick Google to be certain if I was remembering correctly and it does kill coliform in well water. I’m not certain of the amounts but it will be infinitely safer than to pretreat with h2o2 for both you and your fish. I hope that helps. Fingers crossed for you. 

Edited March 2, 2022 by Guppysnail

[KittenFishMom]

We have had the well fixed twice and shocked it many times. The UV was working well until the water got cloudy, which it does from time to time. When things settle a bit, we will start making calls to get the well fixed again by yet a different company. A previous owner had the bright idea to put a driveway over the well. I am guessing that a heavy truck drove over the well and caused a crack below the 4 feet we unearthed for the first repair. 

We will get the well fixed, but first I need to care for my Mom. We are also trying to get the fish tanks cleared up and healthy and leech free. After that, spring will hit with a lot of things that need doing. I am beginning to see that the 55-tank build may have to wait until fall. I had planned it to be destressing my winter project.

A full life is better than an empty on, but once in a while it feels like it is overflowing.

[Andy's Fish Den]

As someone who has owned homes with wells for a long time now (25+ years) and had well issues, I would first contact a well drilling/ service company in your area. They can assess the well and see what issues there are and help you with remedying them. If you have coliform bacteria in the well, I am surprised that your local health department has not got involved, they will probably want you first shock the well, and the retest after a certain amount of days. If it is still present, don't be surprised if you are told to install a filter and chlorinating system. I have a friend that purchased a home a year ago that had the same issue with coliform bacteria and that is what our health department made him do.