New fish quarantine API general cure directions?

[Arose231]

@Jay Hemdal would this be a better option? Coral life turbo twist has 36 watts.

Amazon product

 

[Jay Hemdal]

@Jay Hemdal would this be a better option? Coral life turbo twist has 36 watts.

Amazon product

Yes, but even that may not reach to kill rate for Cryptocaryon. You need to reach nearly 200,000 uWs/cm2 to kill ich tomites. Here is a write-up I did on the subject for a book I'm working on:

UV sterilizers

Ultraviolet (UV) sterilizers are also sold as a “cure” for Cryptocaryon. The problem is that most hobbyist-sized UV sterilizers do not have the power to make an effective kill on the relatively large Cryptocaryon parasite. Additionally, UV sterilizers are effective only on the tomite/theront stage, as this is the only point where the parasite is even present in the water column.

For velvet, Amyloodinium, the fallacy here is that tomites/theronts must leave the fish. Actually, some of them may get caught up in the fish’s mucus and stay attached until they become infective trophonts again. For Cryptocaryon, the tomites/theronts do seem to need to leave the fish, but with side stream application of UV (where only a portion of water passes through the unit) DWELL TIME becomes the limiting factor. Only a portion of the theronts are killed before enough of them attach to the fish to continue the infection. This means that UV sterilization will not eliminate active Cryptocaryon infections from a single aquarium. Where it does have benefit is in eliminating tomites as they pass through a filtration system from one discrete tank to another (like in a public aquarium or fisheries lab). Decades ago, diatom filters were touted as cures for ich and velvet. The same issue applies with them; there are adherent forms of these protozoans that can continue to infect the fish without ever having to leave the fish’s body. Even if they do, the same “dwell time” factor means that some theronts will still be present in the water column to infect the fish.

A recent study (Ge-Ling, 2022) indicates that the UV dose required to kill Cryptocaryon theronts/tomites is 185,000 uw/S/cm2. They do go on however, to conclude: “ …both ozone and UV are ineffective in controlling infection within an individual aquarium because of the adhesive nature of C. irritans tomonts (Ma et al., 2017). Therefore, the focus on UV and ozone treatment should prevent live theronts flow into aquaculture ponds. Second, the tomonts are strongly resistant to UV or ozone than theronts, implying that recommended production doses cannot wholly kill tomonts….”