Last year I bought a tray of roths from a local nursery. They were the slow growing plants while other siblings have come to flowering now. Of the 45, I have 14 left. They faced constant breakout while other plants right next to them never had any problems. Eventually, I decided I couldn't keep cutting leaves, some of them were just too weak and had to go. The remaining were wide-leaved, larger plants and all has been fine until one just broke out with some infection again. I quickly removed it from the case. Now...I know we haven't really found alot of proof for viruses in Paphs, but could all the other plants really be immune to what keeps plaguing these roths? or could the roths have some virus or something?

These are all from the same plant, the recent outbreak.

http://urbansprawl.googlepages.com/3_25_roth1.JPG

http://urbansprawl.googlepages.com/3_25_roth2.JPG

http://urbansprawl.googlepages.com/3_25_roth3.JPG

Looks very much like fungal disease.

Looks very much like fungal disease.
Thought so. Just frustrating that this kinda of outbreak keeps occuring. The plant was nearly under fan actually! These plants must just be weak...

Thought so. Just frustrating that this kinda of outbreak keeps occuring. The plant was nearly under fan actually! These plants must just be weak...

Check the fertilizer your using Lee. An incorrect balance or lack of micro nutrients can weaken or keep the plants immune system low. It might be the cross but its worth checking, particularly in semi hydro.