Chlorine Dioxide

RMS18 · Mar 29, 2017

Wanted to know what effects chlorine Dioxide would have on fish? Thanks

p7willm · Mar 29, 2017

RMS18 · Mar 29, 2017

p7willm said:
Why?

Trying something new with dinos.

p7willm · Mar 30, 2017

In any sort of concentration it will kill anything in the water. This is one of the things water supplies add to water to kill stuff.

RMS18 · Mar 30, 2017

p7willm said:
In any sort of concentration it will kill anything in the water. This is one of the things water supplies add to water to kill stuff.

So I am planning on using water sterilization tabs that you add to lake or stream water so make it safe to drink. They are made by Katadyn micropur.

p7willm · Mar 30, 2017

Lots of people drink tap water every with enough chlorine to kill fish.

Randy Holmes-Farley · Mar 30, 2017

The primary question is whether it kills dinos at lower concentration (or in shorter time) than anything you care substantially about, and I don't know the answer to that question.

RMS18 · Mar 30, 2017

I'm not a chemist.. is bleach or chlorine more toxic?

This might be one of those where it can kill dinos but in the amount needed it would kill fish and all live stock also.

Randy Holmes-Farley · Mar 31, 2017

Bmwm235i said:
I'm not a chemist.. is bleach or chlorine more toxic?

This might be one of those where it can kill dinos but in the amount needed it would kill fish and all live stock also.

There are three different compounds being mentioned here.

Bleach in this context is sodium hypochlorite, NaClO. Hypchlorite is ClO-

Chloride dioxide is ClO2.

Chlorine is Cl2.

They will all be toxic at some dose, but I've not seen comparative data for any organisms we keep.

RMS18 · Mar 31, 2017

Randy Holmes-Farley said:
There are three different compounds being mentioned here.

Bleach in this context is sodium hypochlorite, NaClO. Hypchlorite is ClO-

Chloride dioxide is ClO2.

Chlorine is Cl2.

They will all be toxic at some dose, but I've not seen comparative data for any organisms we keep.

Thanks... well I can say at .16ppm fish are fine show no signs of stress. Corals reacted instantly and closed up.

Randy Holmes-Farley · Apr 1, 2017

Bmwm235i said:
Thanks... well I can say at .16ppm fish are fine show no signs of stress. Corals reacted instantly and closed up.

0.16 ppm of what? Measured how?

RMS18 · Apr 1, 2017

Randy Holmes-Farley said:
0.16 ppm of what? Measured how?

Each tab will create 4ppm of chlorine dioxide in 1 liter of water. I have 50 gallons so 8 tabs would be .16ppm of chlorine dioxide.

Fish are fine today no signs of stress last night. And sand bed is not as brown as usual from dinos. My ammonia is usually .003, it increased to .008 last night. It came down to .006 but after feeding it hit .010 today.

Randy Holmes-Farley · Apr 1, 2017

OK, I'd just be careful to say that's what you dosed and not what is actually in the water since it may rapidly react with inorganics (e.g., bromide) and organics (including tissues) and drop in concentration. I don't know how fast this one drops, but ozone reacts and drops very fast with components in seawater.