its simple do both.
get the best of both worlds
Use the 150 watt HQI for the main light and get a two light T5 retrofit set up to use as actinic lighting.
T5's do not put out the same intensity of MH but they will grow anything, although Mh with grow it faster.
Steve
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*everything said above is just my opinion, and may or may not reflect the views of this BBS, its Operators, and its Members. If cornered on any “opinion” I post I will totally deny having ever said this in a Court of Law…Unless I am the right one*
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