Coral_ClamS,
They are aquarium lighting from reputated brand. Seem okie for the bottom clam and coral even I shift the pendant higher, but I hope not too high as it gonna waste my electricity shining light out of the tank.
For 3ft tank, 1 to 2 pendant is enough, this depends on the angle of reflection from the pendant too.
DE bulb only come in <6.5k, 10k, 13k and 14k. The only 20k is XM which is only available in US.
orgasbt,
They stated that its a UV shield, but then, still my acro got sun burnt...