isolated newbie help

[1kathleen]

Hello - I'm a new member - live on an island off North Carolina - have around 225 orchids - have been addicted for around 3 years and always aquiring more - have to order most because live so far from any growers so have used e-bay with mixed results - hate to throw anything o ut-problem-have around 30 phals spiking - last year I lost several buds and could never figure out why - use electric heat - 8x12 attached greenhouse-keep around 64 at night-humidity 60-80%.Why does this happen so I can try tokeep it from happening this year.also need explanation on the cattleya sheaths - some dry and some green - some go on to bloom some never do anything..can't find any information??? again thank you - so glad I found this site..