I have a bicalcarata Nep. and I just transfered it to a larger tank set-up. I also have four other low land neps in the same tank. But only my bic has started to get brown spots on the oldest leaves but the traps are still in good shape even the lids are healthy. The only change is that it is a larger set up and I have added 1 more two tube 4 foot fixture for a total of 4 bulbs 4 feet. over the tank about 7 to 8 inchs above the plants. It is picturing but I just want to know what is going on with the leaves. I just recently put some holes in the top for air flow maybe that will help. Temp 66 F
min. with a 75 F max. It will get warmer as it is near a south facing window when summer hits. They are not sitting in water and are watered through once weekly. There are also new leaves forming and I think the spots might show up here as well. What should I do and should I be worried.