Cool vs. Warm Lighting

[myrrh & frankincense]

I have an 18" x 18" x 18" Exo Terra tank with various types of orchids*. I currently have four Sun Blaze T5 lights, all 6500k cool. The tank does receive some indirect light from a window approx. 3ft. away but it is insignificant.

Should I replace one/two of my lights with warm T5? Will blooming be a problem? All plants look healthy and grow plenty of roots/leaves. Thanks for the suggestions.



*Specific list of plants:
Bulbophyllum frostii
Bulbophyllum moniliforme
Chiloschista usneoides
(Cirr.) Bulb. makoyanum
(Cirr.) Bulb. medusae
Cryptochilus lutea
Dendrobium aberrans
Dendrobium moniliforme (benikida)
Dendrobium moniliforme (shiraaya)
Dendrobium rigidum
Encyclia tampensis
Epidendrum longirepens
Epigenium nakahari
Gastrochilus japonicus
Isabella pulchella
Lepanthes manabina
Lepanthes telipogoniflora
Neofinetia falcata
Paph NOID
Phalaenopsis mini mark 'holm'
Phalaenopsis lobbii
Platystele umbellata
Pleurothallis ornata (schiedei)
Psychopsiella limminghei
Porpax ustulata
Sedirea japonica
Tolumnia red barry
Tolumnia hawkesiana

[Ross]

No need to do that since you already have the tubes. I only recommend a blend for esthetic reasons - the flower's true colors are more apparent with 5000K lighting. The plant doesn't care, as long as most of it's spectrum needs are met - which they will be with those tubes.

[myrrh & frankincense]

Thanks Ross. I like that answer!