Available at PondRx.com

What It's Good At:

Chloramine T kills bacteria which infect and kill fish. Bacterial gill disease and infectious trematodes (FLUKES) are eradicated.


This chemical was initially tested at UC Davis in California and has found widespread popularity in the treatment of ornamental pond livestock. The chemical is safe when used correctly.

Chloramine T is dosed using the PH of the system as a guide. Normally, you'd use 15ppm; which is six tablespoons in a thousand gallons of pond water.


Effectively controls bacterial gill disease and several parasites including gill and body flukes. Safe when dosed correctly.


If used at too high a dose, Chloramine T can "burn" the fishes' skin. It can kill beneficial filter bacteria so users are expected to bypass treated-water flow around their filters.

Frequently Asked Questions

Q: Am I supposed to turn off my filtering system? And only run the pump?

A: That would be ideal, because then your beneficial nitrogen reducing bacteria INSIDE the filter will be spared the Chloramine (Halamid) effects. Additionally, by leaving the pump running, fish continue to receive crucially important circulation and aeration.

Doc Johnson

Q: Does the Chloramine T harm cats and dogs after the 4 hour period?

A: They could not drink enough to make any difference. After deployment it's existing in the water by volume in "parts per million" in other words, one gram of Chloramine T in 999,999 grams of water....So the amount is negligible unless you're a protozoan.

Doc Johnson

Q: What can I use in 55 gal tank? Comet 6 inch fish has an Open red gill. With two Oranda Fish. I have had these fish for 4 years. I do not want to lose them.

A: Well, jumping in with Chloramine T is probably aggressive. Consider the information at KoiCrisis. Particularly the information about water quality and make sure you run the five essential tests, before you medicate with anything. Medicated food would probably be a better choice, once you're SURE that nitrates aren't actually at the root of this particular problem. How low should they be? Look at KoiCrisis.

Q: Can I use ChloramineT and Anchor's Away at the same time?

A: I would not. I think I'd suggest using the Anchors Away as a followup AFTER the Chloramine T. The reason is that although diflubenzuron is quite stable, it might not resist destruction with the ChloramineT - which dissolves into a weak acid (hypochlorous acid ) solution

Q: Can I just turn on my biofilter after four hours? It sounds like Chloramine T dissipates naturally after four hours. I don't want my bio filter to be hurt.

A: It's true that ChloramineT doesn't hang around too long, however after four hours there is still risk to your filter bacteria. A partial water change would be the safest move from a filter-bacteria standpoint

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