Who wants a very nice bottle of Scotch and a dozen Roses?

[mistakes r crucial]

Hi all,

Last week I put up a post regarding our Albino's and the fact they were miles behind the other Discus in our grow out system. These fish have been driving us nuts for the last couple of months because even though I have some very experienced help/opinions up here when I need them no one can tell me what the problem is without sacrificing one at the vets. I will do that as a last resort but thought I would give the forum one last shot.

The main problem is if we don't fix these guys shortly they are going to be permanently stunted which would be a bit of a tradegy considering the standard of them, they are very nice fish. So, anyone that can give me a diagnosis and treatment to fix them gets one very nice bottle of scotch delivered to their door and if it's one of the ladies, a dozen red roses as well regardless of where you are.

Symptoms are plain and simple, won't eat much, will only touch live food in small amounts, aren't growing, virtually no belly but apart from that have colour and fins not clamped. They have all been treated over the last 10 weeks for flukes and worms with Prazi, Sterazin and Octazin for suspected flagellates. Not all at once I might add, over the 10 week period.

Rod suggested flagellates might be the first thing to look at so 3 days ago I split the 10 in to 2 groups of 5 and switched them off the system. I've treated one lot with a double dose of Sterazin and the second lot with Octazin, I won't really know the results of this for another week or so but no difference so far in any of them.

Here are some photos of them..

The water params are as follows:
Ph 6.8 : 6.9 and stable.
GH 5
KH 2 (sometimes less depending on council treatment)
Temp 28c -28.5c (stable)
W/C 50%-80% every other day.
Ammonia 0
Nitrite 0
Nitrate 5-10 depending on the day.

My apologies for the long post but I wouldn't have a bloody clue how to fixd these guys up.
MAC