'Hate to say it, Charles; but, if you got 4 flowers on one inflorescence, that was a hybrid. Cattleya walkeriana produces 1 or 2 flowers per inflorescence. I'd even venture to say that a very rare clone in tip-top, peak condition can produce 3 flowers; but, 4 is virutally unheard of...for a true, pure Cattleya walkeriana. That being said, if there were other species genes in your plant, that could account for the blooming event. While I don't think that walkerianas need to be fried in the sun, just two 40 watt fluorescent bulbs is a far cry from the light intensity that they do need. I grow my plants in the brightest location in my intermediate greenhouse. They get full sun in winter and half sun in summer. The days are warm and humid and the nights are a bit chilly to quite cool.
Paphman, walkeriana seedlings like it just like ackandiae except not so much light. When they mature, they like the higher light. However, walkeriana and nobilior need drought to bloom well. If you water all year 'round, you'll get no blooming or scattered blooming. Scattered, out of season blooming is fine for a small plant. Any blooming is nice when a plant is young. However, to get a specimen plant to produce a co-ordinated mass blooming, you must keep it dry after the new growths mature. That's why these two species normally bloom from a leafless psuedo-psuedobulb, to conserve moisture during the drought period, which is also the blooming period. The inflorescences will develop and bloom all without any water. Once blooming is finished, water copiously because the plant will explode into growth with new regular, leafed psuedobulbs. Once they are mature, keep dry until the next blooming again. Some large, healthy clones can be made to bloom each spring and again, each fall.
