- really helpful. Based on this and further searching my current set of working assumptions are:
- It's probably Cladogonium ogishimae as it's showing from her 'belly' rather than around her mouth. Regardless and in order of frequency of anecdotes people have had success with
- Formalin+Malachite Green (typically Kordon Rid Ich)
- Salt baths
- Hydrogen Peroxide
- Almond leaves
- Various Copper treatments administered carefully (shrimp equivalent to Chemo).
- It's highly likely more/most of my shrimp are infected - I just won't see the parasite until the infection is pretty heavy.
- I need to dose my main tank to kill off any spores - and hopefully sort out the less infected shrimp
- There's an outside chance I can save the visibly infected female
This morning I dosed her quarantine tank with NTLabs Anti-White Spot & Fungus (a Formalin+Malachite green product) double strength (0.1ML per litre) compared to the instructions. Based on Sparkyweasel's link I now have some snowflake food dosed (2ml per gram) and drying which I will add in the morning. That's a massively bigger dose so I think I'll do daily WCs at the same time.
For the main tank I'm planning on following the suggested dosing regime in the hope that it will kill off any spores and suffice to cure less well-established infections.
When I spotted the infected shrimp I transferred 6 shrimp to my 12L Marina plant tank on the off chance that they weren't infected and might act as a fallback colony. In the interest of science I'm tempted to buy some hydrogen peroxide and dose them with that as a preventative. I'll also drop a few almond leaves in. It won't be a straight a/b test as that tank is not heated, and the Cladogonium ogishimae article indicates that high temperatures favour the parasite. Nevertheless, it will be a further data point.
As a final piece of info, I got my CRS from three different sources in weeks 4,6 and 7 (week 0 day 1 was when the water and plants went in), and spotted the infection in week 14.
View attachment 7419 28-Dec Quarantine tank_.jpg