Good info, sounds like your getting some accurate answers finally! Seems like you were right about the extremely hard water being the main underlying issue all along. May not have been killing them but it triggered the chain of events.
Do you think those trematodes are likely present in high numbers in the other rays as well?
Awesome 3 stage plan of attack. The UV should help a lot with reducing the concentration by killing the free floaters (I'd check with Ken but 90,000 μWs/cm2 I think might be the ballpark for kill rate).
Real happy for you Al great news.
Thanks Reed. I'm not even remotely familiar with these diseases. That's why I contacted Mr. Webber.
IF you can offer any advice, I sure would appreciate it.
I've always said I got in way over my head with rays. I can handle the building the system part, but as we discussed, I'm pretty crappy with the Biology/scientific stuff. The university tried some meds on the bacteria they found and recommended 2 meds, both of which are found in Maracyn plus. IF any of the old school guys here remember Nic, I believe this was one of his meds of choice. Unfortunately they no longer sell it by the gallon so treating 2K worth of tanks 3 times isn't going to be cheap

But then again what about this hobby is??? lol
I've already contacted Ken regarding the UVs but he's not familiar with TMC brand, so I have to take some measurements when they get here so he can run them on his program. I did months and months of UV research and I'm convinced by all the reviews I've read that these seem to be pretty nice UVs for the money. The units themselves aren't expensive at all compared to other brands, bulbs are cheap and made by GE so should be easy to obtain down the road, and the ballasts are supposed to last. Obviously these are NOT my first choice, as that would go to Wlim, but given my financial situation they were the best I could afford.
As far as other rays being infected, I just assume they all are. They will all be treated. I've been Prazi'ing the crap out of the big tank. 4 weeks in and will be finishing up this week. Start the Maracyn at the end of the week, and that should buy me a week or so to get the UVs ready.
The rays on the smaller system (600 gallons total) don't show near the color or appetite fluctuation as the girl I lost did, but I think breeding attempts put the stress factor through the roof on the big tank. The little system also has an 80 watt UV installed on it.
I'll be very happy once I can enjoy happy, colorful, breeding rays..... Just wish I would have been able to take care of all this a long time ago. Should have just went with my gut instead of searching for the reasurement that I thought I needed in order to proceed. I always thought the water was too hard but since no one ever agreed I just kept overlooking it. Should have known when I discovered Shawn was using RO, cause the water up in MN is very similar to what we have down here.